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Finding the Fourth Proportional to 508,507.60, 762,761.40 and 129,427.60

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Solution

The fourth proportional to 508,507.60, 762,761.40 and 129,427.60 is: 194,141.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,507.60 : 762,761.40 = 129,427.60 : x
  2. Step 2: Convert to fraction form
    508,507.60/762,761.40 = 129,427.60/x
  3. Step 3: Cross multiply
    508,507.60x = 762,761.40 × 129,427.60
  4. Step 4: Simplify right side
    508,507.60x = 98,722,377,374.64
  5. Step 5: Solve for x
    x = 98,722,377,374.64/508,507.60
  6. Step 6: Final answer
    x = 194,141.40

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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.