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Finding the Fourth Proportional to 225,404.49, 338,073.63 and 85,130.31

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Solution

The fourth proportional to 225,404.49, 338,073.63 and 85,130.31 is: 127,682.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,404.49 : 338,073.63 = 85,130.31 : x
  2. Step 2: Convert to fraction form
    225,404.49/338,073.63 = 85,130.31/x
  3. Step 3: Cross multiply
    225,404.49x = 338,073.63 × 85,130.31
  4. Step 4: Simplify right side
    225,404.49x = 28,780,312,924.73
  5. Step 5: Solve for x
    x = 28,780,312,924.73/225,404.49
  6. Step 6: Final answer
    x = 127,682.96

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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.