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Finding the Fourth Proportional to 491,638.52, 737,453.66 and 136,651.50

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Solution

The fourth proportional to 491,638.52, 737,453.66 and 136,651.50 is: 204,976.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,638.52 : 737,453.66 = 136,651.50 : x
  2. Step 2: Convert to fraction form
    491,638.52/737,453.66 = 136,651.50/x
  3. Step 3: Cross multiply
    491,638.52x = 737,453.66 × 136,651.50
  4. Step 4: Simplify right side
    491,638.52x = 100,774,148,819.49
  5. Step 5: Solve for x
    x = 100,774,148,819.49/491,638.52
  6. Step 6: Final answer
    x = 204,976.10

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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.