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Finding the Fourth Proportional to 221,490.33, 332,240.21 and 79,344.86

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Solution

The fourth proportional to 221,490.33, 332,240.21 and 79,344.86 is: 119,018.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,490.33 : 332,240.21 = 79,344.86 : x
  2. Step 2: Convert to fraction form
    221,490.33/332,240.21 = 79,344.86/x
  3. Step 3: Cross multiply
    221,490.33x = 332,240.21 × 79,344.86
  4. Step 4: Simplify right side
    221,490.33x = 26,361,550,890.90
  5. Step 5: Solve for x
    x = 26,361,550,890.90/221,490.33
  6. Step 6: Final answer
    x = 119,018.97

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1.5x scale

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.