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Finding the Fourth Proportional to 279,378.67, 418,400.97 and 160,800.76

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Solution

The fourth proportional to 279,378.67, 418,400.97 and 160,800.76 is: 240,817.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,378.67 : 418,400.97 = 160,800.76 : x
  2. Step 2: Convert to fraction form
    279,378.67/418,400.97 = 160,800.76/x
  3. Step 3: Cross multiply
    279,378.67x = 418,400.97 × 160,800.76
  4. Step 4: Simplify right side
    279,378.67x = 67,279,193,960.74
  5. Step 5: Solve for x
    x = 67,279,193,960.74/279,378.67
  6. Step 6: Final answer
    x = 240,817.22

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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.