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Finding the Fourth Proportional to 225,092.85, 310,654.94 and 129,618.15

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Solution

The fourth proportional to 225,092.85, 310,654.94 and 129,618.15 is: 178,888.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,092.85 : 310,654.94 = 129,618.15 : x
  2. Step 2: Convert to fraction form
    225,092.85/310,654.94 = 129,618.15/x
  3. Step 3: Cross multiply
    225,092.85x = 310,654.94 × 129,618.15
  4. Step 4: Simplify right side
    225,092.85x = 40,266,517,963.07
  5. Step 5: Solve for x
    x = 40,266,517,963.07/225,092.85
  6. Step 6: Final answer
    x = 178,888.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.