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Finding the Fourth Proportional to 605,908.42, 908,859.89 and 156,591.09

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Solution

The fourth proportional to 605,908.42, 908,859.89 and 156,591.09 is: 234,885.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,908.42 : 908,859.89 = 156,591.09 : x
  2. Step 2: Convert to fraction form
    605,908.42/908,859.89 = 156,591.09/x
  3. Step 3: Cross multiply
    605,908.42x = 908,859.89 × 156,591.09
  4. Step 4: Simplify right side
    605,908.42x = 142,319,361,223.86
  5. Step 5: Solve for x
    x = 142,319,361,223.86/605,908.42
  6. Step 6: Final answer
    x = 234,885.93

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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.