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Finding the Fourth Proportional to 288,568.98, 432,265.47 and 138,351.30

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Solution

The fourth proportional to 288,568.98, 432,265.47 and 138,351.30 is: 207,245.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,568.98 : 432,265.47 = 138,351.30 : x
  2. Step 2: Convert to fraction form
    288,568.98/432,265.47 = 138,351.30/x
  3. Step 3: Cross multiply
    288,568.98x = 432,265.47 × 138,351.30
  4. Step 4: Simplify right side
    288,568.98x = 59,804,489,719.61
  5. Step 5: Solve for x
    x = 59,804,489,719.61/288,568.98
  6. Step 6: Final answer
    x = 207,245.04

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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.