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Finding the Fourth Proportional to 406,681.20, 561,220.11 and 225,404.82

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Solution

The fourth proportional to 406,681.20, 561,220.11 and 225,404.82 is: 311,058.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,681.20 : 561,220.11 = 225,404.82 : x
  2. Step 2: Convert to fraction form
    406,681.20/561,220.11 = 225,404.82/x
  3. Step 3: Cross multiply
    406,681.20x = 561,220.11 × 225,404.82
  4. Step 4: Simplify right side
    406,681.20x = 126,501,717,874.93
  5. Step 5: Solve for x
    x = 126,501,717,874.93/406,681.20
  6. Step 6: Final answer
    x = 311,058.68

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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.