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Finding the Fourth Proportional to 442,008.80, 663,013.20 and 146,520.80

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Solution

The fourth proportional to 442,008.80, 663,013.20 and 146,520.80 is: 219,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,008.80 : 663,013.20 = 146,520.80 : x
  2. Step 2: Convert to fraction form
    442,008.80/663,013.20 = 146,520.80/x
  3. Step 3: Cross multiply
    442,008.80x = 663,013.20 × 146,520.80
  4. Step 4: Simplify right side
    442,008.80x = 97,145,224,474.56
  5. Step 5: Solve for x
    x = 97,145,224,474.56/442,008.80
  6. Step 6: Final answer
    x = 219,781.20

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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.