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Finding the Fourth Proportional to 279,380.68, 418,403.96 and 160,802.76

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Solution

The fourth proportional to 279,380.68, 418,403.96 and 160,802.76 is: 240,820.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,380.68 : 418,403.96 = 160,802.76 : x
  2. Step 2: Convert to fraction form
    279,380.68/418,403.96 = 160,802.76/x
  3. Step 3: Cross multiply
    279,380.68x = 418,403.96 × 160,802.76
  4. Step 4: Simplify right side
    279,380.68x = 67,280,511,562.93
  5. Step 5: Solve for x
    x = 67,280,511,562.93/279,380.68
  6. Step 6: Final answer
    x = 240,820.20

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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.