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Finding the Fourth Proportional to 220,432.80, 304,188.80 and 119,830.80

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Solution

The fourth proportional to 220,432.80, 304,188.80 and 119,830.80 is: 165,361.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,432.80 : 304,188.80 = 119,830.80 : x
  2. Step 2: Convert to fraction form
    220,432.80/304,188.80 = 119,830.80/x
  3. Step 3: Cross multiply
    220,432.80x = 304,188.80 × 119,830.80
  4. Step 4: Simplify right side
    220,432.80x = 36,451,187,255.04
  5. Step 5: Solve for x
    x = 36,451,187,255.04/220,432.80
  6. Step 6: Final answer
    x = 165,361.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.