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Finding the Fourth Proportional to 287,765.84, 431,632.96 and 88,086.04

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Solution

The fourth proportional to 287,765.84, 431,632.96 and 88,086.04 is: 132,124.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,765.84 : 431,632.96 = 88,086.04 : x
  2. Step 2: Convert to fraction form
    287,765.84/431,632.96 = 88,086.04/x
  3. Step 3: Cross multiply
    287,765.84x = 431,632.96 × 88,086.04
  4. Step 4: Simplify right side
    287,765.84x = 38,020,838,179.88
  5. Step 5: Solve for x
    x = 38,020,838,179.88/287,765.84
  6. Step 6: Final answer
    x = 132,124.22

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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.