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Finding the Fourth Proportional to 402,003.53, 554,765.99 and 220,727.20

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Solution

The fourth proportional to 402,003.53, 554,765.99 and 220,727.20 is: 304,604.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,003.53 : 554,765.99 = 220,727.20 : x
  2. Step 2: Convert to fraction form
    402,003.53/554,765.99 = 220,727.20/x
  3. Step 3: Cross multiply
    402,003.53x = 554,765.99 × 220,727.20
  4. Step 4: Simplify right side
    402,003.53x = 122,451,943,627.93
  5. Step 5: Solve for x
    x = 122,451,943,627.93/402,003.53
  6. Step 6: Final answer
    x = 304,604.15

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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.