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Finding the Fourth Proportional to 221,965.92, 332,939.16 and 64,190.88

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Solution

The fourth proportional to 221,965.92, 332,939.16 and 64,190.88 is: 96,283.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,965.92 : 332,939.16 = 64,190.88 : x
  2. Step 2: Convert to fraction form
    221,965.92/332,939.16 = 64,190.88/x
  3. Step 3: Cross multiply
    221,965.92x = 332,939.16 × 64,190.88
  4. Step 4: Simplify right side
    221,965.92x = 21,371,657,666.86
  5. Step 5: Solve for x
    x = 21,371,657,666.86/221,965.92
  6. Step 6: Final answer
    x = 96,283.51

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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.