Home / 415,389.68-623,084.60-131,109

Finding the Fourth Proportional to 415,389.68, 623,084.60 and 131,109

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Solution

The fourth proportional to 415,389.68, 623,084.60 and 131,109 is: 196,663.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,389.68 : 623,084.60 = 131,109 : x
  2. Step 2: Convert to fraction form
    415,389.68/623,084.60 = 131,109/x
  3. Step 3: Cross multiply
    415,389.68x = 623,084.60 × 131,109
  4. Step 4: Simplify right side
    415,389.68x = 81,691,998,821.40
  5. Step 5: Solve for x
    x = 81,691,998,821.40/415,389.68
  6. Step 6: Final answer
    x = 196,663.53

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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.