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Finding the Fourth Proportional to 406,717.79, 561,304.17 and 225,486.59

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Solution

The fourth proportional to 406,717.79, 561,304.17 and 225,486.59 is: 311,190.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,717.79 : 561,304.17 = 225,486.59 : x
  2. Step 2: Convert to fraction form
    406,717.79/561,304.17 = 225,486.59/x
  3. Step 3: Cross multiply
    406,717.79x = 561,304.17 × 225,486.59
  4. Step 4: Simplify right side
    406,717.79x = 126,566,560,439.56
  5. Step 5: Solve for x
    x = 126,566,560,439.56/406,717.79
  6. Step 6: Final answer
    x = 311,190.13

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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.