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Finding the Fourth Proportional to 406,606.72, 561,120.58 and 225,321.70

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Solution

The fourth proportional to 406,606.72, 561,120.58 and 225,321.70 is: 310,945.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,606.72 : 561,120.58 = 225,321.70 : x
  2. Step 2: Convert to fraction form
    406,606.72/561,120.58 = 225,321.70/x
  3. Step 3: Cross multiply
    406,606.72x = 561,120.58 × 225,321.70
  4. Step 4: Simplify right side
    406,606.72x = 126,432,642,990.59
  5. Step 5: Solve for x
    x = 126,432,642,990.59/406,606.72
  6. Step 6: Final answer
    x = 310,945.78

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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.