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Finding the Fourth Proportional to 288,520.60, 432,780.90 and 75,288.10

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Solution

The fourth proportional to 288,520.60, 432,780.90 and 75,288.10 is: 112,932.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,520.60 : 432,780.90 = 75,288.10 : x
  2. Step 2: Convert to fraction form
    288,520.60/432,780.90 = 75,288.10/x
  3. Step 3: Cross multiply
    288,520.60x = 432,780.90 × 75,288.10
  4. Step 4: Simplify right side
    288,520.60x = 32,583,251,677.29
  5. Step 5: Solve for x
    x = 32,583,251,677.29/288,520.60
  6. Step 6: Final answer
    x = 112,932.15

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1.5x scale

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.