Home / 487,258.20-730,887.30-238,426.20

Finding the Fourth Proportional to 487,258.20, 730,887.30 and 238,426.20

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Solution

The fourth proportional to 487,258.20, 730,887.30 and 238,426.20 is: 357,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,258.20 : 730,887.30 = 238,426.20 : x
  2. Step 2: Convert to fraction form
    487,258.20/730,887.30 = 238,426.20/x
  3. Step 3: Cross multiply
    487,258.20x = 730,887.30 × 238,426.20
  4. Step 4: Simplify right side
    487,258.20x = 174,262,681,567.26
  5. Step 5: Solve for x
    x = 174,262,681,567.26/487,258.20
  6. Step 6: Final answer
    x = 357,639.30

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Double scale
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Similar ratio
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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.