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Finding the Fourth Proportional to 439,164.78, 658,688.85 and 123,648.90

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Solution

The fourth proportional to 439,164.78, 658,688.85 and 123,648.90 is: 185,456.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,164.78 : 658,688.85 = 123,648.90 : x
  2. Step 2: Convert to fraction form
    439,164.78/658,688.85 = 123,648.90/x
  3. Step 3: Cross multiply
    439,164.78x = 658,688.85 × 123,648.90
  4. Step 4: Simplify right side
    439,164.78x = 81,446,151,744.77
  5. Step 5: Solve for x
    x = 81,446,151,744.77/439,164.78
  6. Step 6: Final answer
    x = 185,456.93

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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.