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Finding the Fourth Proportional to 437,380.65, 655,972.55 and 156,897.90

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Solution

The fourth proportional to 437,380.65, 655,972.55 and 156,897.90 is: 235,311.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,380.65 : 655,972.55 = 156,897.90 : x
  2. Step 2: Convert to fraction form
    437,380.65/655,972.55 = 156,897.90/x
  3. Step 3: Cross multiply
    437,380.65x = 655,972.55 × 156,897.90
  4. Step 4: Simplify right side
    437,380.65x = 102,920,714,768.16
  5. Step 5: Solve for x
    x = 102,920,714,768.16/437,380.65
  6. Step 6: Final answer
    x = 235,311.54

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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.