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Finding the Fourth Proportional to 415,195.20, 622,792.80 and 134,712.45

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Solution

The fourth proportional to 415,195.20, 622,792.80 and 134,712.45 is: 202,068.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,195.20 : 622,792.80 = 134,712.45 : x
  2. Step 2: Convert to fraction form
    415,195.20/622,792.80 = 134,712.45/x
  3. Step 3: Cross multiply
    415,195.20x = 622,792.80 × 134,712.45
  4. Step 4: Simplify right side
    415,195.20x = 83,897,943,930.36
  5. Step 5: Solve for x
    x = 83,897,943,930.36/415,195.20
  6. Step 6: Final answer
    x = 202,068.68

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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.