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Finding the Fourth Proportional to 221,434.30, 332,151.45 and 81,174.70

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Solution

The fourth proportional to 221,434.30, 332,151.45 and 81,174.70 is: 121,762.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,434.30 : 332,151.45 = 81,174.70 : x
  2. Step 2: Convert to fraction form
    221,434.30/332,151.45 = 81,174.70/x
  3. Step 3: Cross multiply
    221,434.30x = 332,151.45 × 81,174.70
  4. Step 4: Simplify right side
    221,434.30x = 26,962,294,308.32
  5. Step 5: Solve for x
    x = 26,962,294,308.32/221,434.30
  6. Step 6: Final answer
    x = 121,762.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.