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Finding the Fourth Proportional to 491,914.62, 737,920.68 and 136,928.53

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Solution

The fourth proportional to 491,914.62, 737,920.68 and 136,928.53 is: 205,406.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,914.62 : 737,920.68 = 136,928.53 : x
  2. Step 2: Convert to fraction form
    491,914.62/737,920.68 = 136,928.53/x
  3. Step 3: Cross multiply
    491,914.62x = 737,920.68 × 136,928.53
  4. Step 4: Simplify right side
    491,914.62x = 101,042,390,997.34
  5. Step 5: Solve for x
    x = 101,042,390,997.34/491,914.62
  6. Step 6: Final answer
    x = 205,406.36

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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.