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Finding the Fourth Proportional to 221,423.52, 332,187.97 and 71,663.81

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Solution

The fourth proportional to 221,423.52, 332,187.97 and 71,663.81 is: 107,512.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,423.52 : 332,187.97 = 71,663.81 : x
  2. Step 2: Convert to fraction form
    221,423.52/332,187.97 = 71,663.81/x
  3. Step 3: Cross multiply
    221,423.52x = 332,187.97 × 71,663.81
  4. Step 4: Simplify right side
    221,423.52x = 23,805,855,566.37
  5. Step 5: Solve for x
    x = 23,805,855,566.37/221,423.52
  6. Step 6: Final answer
    x = 107,512.77

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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.