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Finding the Fourth Proportional to 221,348.90, 332,023.35 and 55,136.90

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Solution

The fourth proportional to 221,348.90, 332,023.35 and 55,136.90 is: 82,705.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,348.90 : 332,023.35 = 55,136.90 : x
  2. Step 2: Convert to fraction form
    221,348.90/332,023.35 = 55,136.90/x
  3. Step 3: Cross multiply
    221,348.90x = 332,023.35 × 55,136.90
  4. Step 4: Simplify right side
    221,348.90x = 18,306,738,246.62
  5. Step 5: Solve for x
    x = 18,306,738,246.62/221,348.90
  6. Step 6: Final answer
    x = 82,705.35

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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.