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Finding the Fourth Proportional to 442,937.10, 664,405.65 and 255,729.90

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Solution

The fourth proportional to 442,937.10, 664,405.65 and 255,729.90 is: 383,594.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,937.10 : 664,405.65 = 255,729.90 : x
  2. Step 2: Convert to fraction form
    442,937.10/664,405.65 = 255,729.90/x
  3. Step 3: Cross multiply
    442,937.10x = 664,405.65 × 255,729.90
  4. Step 4: Simplify right side
    442,937.10x = 169,908,390,433.94
  5. Step 5: Solve for x
    x = 169,908,390,433.94/442,937.10
  6. Step 6: Final answer
    x = 383,594.85

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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.