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Finding the Fourth Proportional to 288,429.20, 432,685.20 and 88,766.48

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Solution

The fourth proportional to 288,429.20, 432,685.20 and 88,766.48 is: 133,162.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,429.20 : 432,685.20 = 88,766.48 : x
  2. Step 2: Convert to fraction form
    288,429.20/432,685.20 = 88,766.48/x
  3. Step 3: Cross multiply
    288,429.20x = 432,685.20 × 88,766.48
  4. Step 4: Simplify right side
    288,429.20x = 38,407,942,152.10
  5. Step 5: Solve for x
    x = 38,407,942,152.10/288,429.20
  6. Step 6: Final answer
    x = 133,162.46

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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.