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Finding the Fourth Proportional to 491,222.87, 736,834.28 and 136,236.89

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Solution

The fourth proportional to 491,222.87, 736,834.28 and 136,236.89 is: 204,355.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,222.87 : 736,834.28 = 136,236.89 : x
  2. Step 2: Convert to fraction form
    491,222.87/736,834.28 = 136,236.89/x
  3. Step 3: Cross multiply
    491,222.87x = 736,834.28 × 136,236.89
  4. Step 4: Simplify right side
    491,222.87x = 100,384,006,387.23
  5. Step 5: Solve for x
    x = 100,384,006,387.23/491,222.87
  6. Step 6: Final answer
    x = 204,355.32

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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.