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Finding the Fourth Proportional to 503,646.59, 755,499.49 and 143,789.78

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Solution

The fourth proportional to 503,646.59, 755,499.49 and 143,789.78 is: 215,693.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,646.59 : 755,499.49 = 143,789.78 : x
  2. Step 2: Convert to fraction form
    503,646.59/755,499.49 = 143,789.78/x
  3. Step 3: Cross multiply
    503,646.59x = 755,499.49 × 143,789.78
  4. Step 4: Simplify right side
    503,646.59x = 108,633,105,457.21
  5. Step 5: Solve for x
    x = 108,633,105,457.21/503,646.59
  6. Step 6: Final answer
    x = 215,693.12

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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.