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Finding the Fourth Proportional to 288,421.92, 432,474.31 and 88,686.85

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Solution

The fourth proportional to 288,421.92, 432,474.31 and 88,686.85 is: 132,981.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,421.92 : 432,474.31 = 88,686.85 : x
  2. Step 2: Convert to fraction form
    288,421.92/432,474.31 = 88,686.85/x
  3. Step 3: Cross multiply
    288,421.92x = 432,474.31 × 88,686.85
  4. Step 4: Simplify right side
    288,421.92x = 38,354,784,259.82
  5. Step 5: Solve for x
    x = 38,354,784,259.82/288,421.92
  6. Step 6: Final answer
    x = 132,981.52

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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.