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Finding the Fourth Proportional to 287,903.32, 431,839.39 and 88,224.28

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Solution

The fourth proportional to 287,903.32, 431,839.39 and 88,224.28 is: 132,331.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,903.32 : 431,839.39 = 88,224.28 : x
  2. Step 2: Convert to fraction form
    287,903.32/431,839.39 = 88,224.28/x
  3. Step 3: Cross multiply
    287,903.32x = 431,839.39 × 88,224.28
  4. Step 4: Simplify right side
    287,903.32x = 38,098,717,099.19
  5. Step 5: Solve for x
    x = 38,098,717,099.19/287,903.32
  6. Step 6: Final answer
    x = 132,331.64

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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.