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Finding the Fourth Proportional to 445,805.80, 668,073.85 and 220,944.53

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Solution

The fourth proportional to 445,805.80, 668,073.85 and 220,944.53 is: 331,102.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,805.80 : 668,073.85 = 220,944.53 : x
  2. Step 2: Convert to fraction form
    445,805.80/668,073.85 = 220,944.53/x
  3. Step 3: Cross multiply
    445,805.80x = 668,073.85 × 220,944.53
  4. Step 4: Simplify right side
    445,805.80x = 147,607,262,793.54
  5. Step 5: Solve for x
    x = 147,607,262,793.54/445,805.80
  6. Step 6: Final answer
    x = 331,102.16

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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.