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Finding the Fourth Proportional to 406,617.87, 561,133.98 and 225,332.79

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Solution

The fourth proportional to 406,617.87, 561,133.98 and 225,332.79 is: 310,959.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,617.87 : 561,133.98 = 225,332.79 : x
  2. Step 2: Convert to fraction form
    406,617.87/561,133.98 = 225,332.79/x
  3. Step 3: Cross multiply
    406,617.87x = 561,133.98 × 225,332.79
  4. Step 4: Simplify right side
    406,617.87x = 126,441,883,172.95
  5. Step 5: Solve for x
    x = 126,441,883,172.95/406,617.87
  6. Step 6: Final answer
    x = 310,959.97

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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.