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Finding the Fourth Proportional to 287,837.80, 431,757.68 and 88,157.27

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Solution

The fourth proportional to 287,837.80, 431,757.68 and 88,157.27 is: 132,236.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,837.80 : 431,757.68 = 88,157.27 : x
  2. Step 2: Convert to fraction form
    287,837.80/431,757.68 = 88,157.27/x
  3. Step 3: Cross multiply
    287,837.80x = 431,757.68 × 88,157.27
  4. Step 4: Simplify right side
    287,837.80x = 38,062,579,008.94
  5. Step 5: Solve for x
    x = 38,062,579,008.94/287,837.80
  6. Step 6: Final answer
    x = 132,236.21

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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.