Home / 279,304.19-385,441.60-151,980.69

Finding the Fourth Proportional to 279,304.19, 385,441.60 and 151,980.69

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Solution

The fourth proportional to 279,304.19, 385,441.60 and 151,980.69 is: 209,734.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,304.19 : 385,441.60 = 151,980.69 : x
  2. Step 2: Convert to fraction form
    279,304.19/385,441.60 = 151,980.69/x
  3. Step 3: Cross multiply
    279,304.19x = 385,441.60 × 151,980.69
  4. Step 4: Simplify right side
    279,304.19x = 58,579,680,322.70
  5. Step 5: Solve for x
    x = 58,579,680,322.70/279,304.19
  6. Step 6: Final answer
    x = 209,734.34

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.