Home / 487,886.20-731,829.30-239,054.20

Finding the Fourth Proportional to 487,886.20, 731,829.30 and 239,054.20

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Solution

The fourth proportional to 487,886.20, 731,829.30 and 239,054.20 is: 358,581.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,886.20 : 731,829.30 = 239,054.20 : x
  2. Step 2: Convert to fraction form
    487,886.20/731,829.30 = 239,054.20/x
  3. Step 3: Cross multiply
    487,886.20x = 731,829.30 × 239,054.20
  4. Step 4: Simplify right side
    487,886.20x = 174,946,867,848.06
  5. Step 5: Solve for x
    x = 174,946,867,848.06/487,886.20
  6. Step 6: Final answer
    x = 358,581.30

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Half scale
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Double scale
Find fourth proportional to 487,887.20, 731,830.80 and 239,055.20
Similar ratio
Find fourth proportional to 731,829.30, 1,097,743.95 and 358,581.30
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.