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Finding the Fourth Proportional to 406,863.48, 561,504.72 and 225,632.20

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Solution

The fourth proportional to 406,863.48, 561,504.72 and 225,632.20 is: 311,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,863.48 : 561,504.72 = 225,632.20 : x
  2. Step 2: Convert to fraction form
    406,863.48/561,504.72 = 225,632.20/x
  3. Step 3: Cross multiply
    406,863.48x = 561,504.72 × 225,632.20
  4. Step 4: Simplify right side
    406,863.48x = 126,693,545,283.98
  5. Step 5: Solve for x
    x = 126,693,545,283.98/406,863.48
  6. Step 6: Final answer
    x = 311,390.80

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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.