Home / 221,630.24-332,248.16-81,356

Finding the Fourth Proportional to 221,630.24, 332,248.16 and 81,356

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Solution

The fourth proportional to 221,630.24, 332,248.16 and 81,356 is: 121,961.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,630.24 : 332,248.16 = 81,356 : x
  2. Step 2: Convert to fraction form
    221,630.24/332,248.16 = 81,356/x
  3. Step 3: Cross multiply
    221,630.24x = 332,248.16 × 81,356
  4. Step 4: Simplify right side
    221,630.24x = 27,030,381,304.96
  5. Step 5: Solve for x
    x = 27,030,381,304.96/221,630.24
  6. Step 6: Final answer
    x = 121,961.61

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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.