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Finding the Fourth Proportional to 221,633.90, 332,497.56 and 71,862.51

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Solution

The fourth proportional to 221,633.90, 332,497.56 and 71,862.51 is: 107,808.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,633.90 : 332,497.56 = 71,862.51 : x
  2. Step 2: Convert to fraction form
    221,633.90/332,497.56 = 71,862.51/x
  3. Step 3: Cross multiply
    221,633.90x = 332,497.56 × 71,862.51
  4. Step 4: Simplify right side
    221,633.90x = 23,894,110,342.60
  5. Step 5: Solve for x
    x = 23,894,110,342.60/221,633.90
  6. Step 6: Final answer
    x = 107,808.92

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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.