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Finding the Fourth Proportional to 503,747.25, 755,646.82 and 143,889.72

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Solution

The fourth proportional to 503,747.25, 755,646.82 and 143,889.72 is: 215,841.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,747.25 : 755,646.82 = 143,889.72 : x
  2. Step 2: Convert to fraction form
    503,747.25/755,646.82 = 143,889.72/x
  3. Step 3: Cross multiply
    503,747.25x = 755,646.82 × 143,889.72
  4. Step 4: Simplify right side
    503,747.25x = 108,729,806,964.67
  5. Step 5: Solve for x
    x = 108,729,806,964.67/503,747.25
  6. Step 6: Final answer
    x = 215,841.99

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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.