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Finding the Fourth Proportional to 437,288.16, 655,920.72 and 121,766.88

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Solution

The fourth proportional to 437,288.16, 655,920.72 and 121,766.88 is: 182,647.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,288.16 : 655,920.72 = 121,766.88 : x
  2. Step 2: Convert to fraction form
    437,288.16/655,920.72 = 121,766.88/x
  3. Step 3: Cross multiply
    437,288.16x = 655,920.72 × 121,766.88
  4. Step 4: Simplify right side
    437,288.16x = 79,869,419,601.75
  5. Step 5: Solve for x
    x = 79,869,419,601.75/437,288.16
  6. Step 6: Final answer
    x = 182,647.11

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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.