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Finding the Fourth Proportional to 218,352.57, 301,332.43 and 122,862.66

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Solution

The fourth proportional to 218,352.57, 301,332.43 and 122,862.66 is: 169,553.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,352.57 : 301,332.43 = 122,862.66 : x
  2. Step 2: Convert to fraction form
    218,352.57/301,332.43 = 122,862.66/x
  3. Step 3: Cross multiply
    218,352.57x = 301,332.43 × 122,862.66
  4. Step 4: Simplify right side
    218,352.57x = 37,022,502,387.40
  5. Step 5: Solve for x
    x = 37,022,502,387.40/218,352.57
  6. Step 6: Final answer
    x = 169,553.78

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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.