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Finding the Fourth Proportional to 491,326.52, 736,990.16 and 136,340.88

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Solution

The fourth proportional to 491,326.52, 736,990.16 and 136,340.88 is: 204,511.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,326.52 : 736,990.16 = 136,340.88 : x
  2. Step 2: Convert to fraction form
    491,326.52/736,990.16 = 136,340.88/x
  3. Step 3: Cross multiply
    491,326.52x = 736,990.16 × 136,340.88
  4. Step 4: Simplify right side
    491,326.52x = 100,481,886,284.04
  5. Step 5: Solve for x
    x = 100,481,886,284.04/491,326.52
  6. Step 6: Final answer
    x = 204,511.43

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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.