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Finding the Fourth Proportional to 406,636.62, 561,198.15 and 225,407.58

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Solution

The fourth proportional to 406,636.62, 561,198.15 and 225,407.58 is: 311,084.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,636.62 : 561,198.15 = 225,407.58 : x
  2. Step 2: Convert to fraction form
    406,636.62/561,198.15 = 225,407.58/x
  3. Step 3: Cross multiply
    406,636.62x = 561,198.15 × 225,407.58
  4. Step 4: Simplify right side
    406,636.62x = 126,498,316,891.98
  5. Step 5: Solve for x
    x = 126,498,316,891.98/406,636.62
  6. Step 6: Final answer
    x = 311,084.42

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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.