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Finding the Fourth Proportional to 406,861.48, 561,501.96 and 225,630.20

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Solution

The fourth proportional to 406,861.48, 561,501.96 and 225,630.20 is: 311,388.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,861.48 : 561,501.96 = 225,630.20 : x
  2. Step 2: Convert to fraction form
    406,861.48/561,501.96 = 225,630.20/x
  3. Step 3: Cross multiply
    406,861.48x = 561,501.96 × 225,630.20
  4. Step 4: Simplify right side
    406,861.48x = 126,691,799,535.19
  5. Step 5: Solve for x
    x = 126,691,799,535.19/406,861.48
  6. Step 6: Final answer
    x = 311,388.04

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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.