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Finding the Fourth Proportional to 221,842.71, 332,782.52 and 72,079.69

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Solution

The fourth proportional to 221,842.71, 332,782.52 and 72,079.69 is: 108,125.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,842.71 : 332,782.52 = 72,079.69 : x
  2. Step 2: Convert to fraction form
    221,842.71/332,782.52 = 72,079.69/x
  3. Step 3: Cross multiply
    221,842.71x = 332,782.52 × 72,079.69
  4. Step 4: Simplify right side
    221,842.71x = 23,986,860,879.02
  5. Step 5: Solve for x
    x = 23,986,860,879.02/221,842.71
  6. Step 6: Final answer
    x = 108,125.53

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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.