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Finding the Fourth Proportional to 288,882.20, 398,657.13 and 161,557.79

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Solution

The fourth proportional to 288,882.20, 398,657.13 and 161,557.79 is: 222,949.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,882.20 : 398,657.13 = 161,557.79 : x
  2. Step 2: Convert to fraction form
    288,882.20/398,657.13 = 161,557.79/x
  3. Step 3: Cross multiply
    288,882.20x = 398,657.13 × 161,557.79
  4. Step 4: Simplify right side
    288,882.20x = 64,406,167,578.84
  5. Step 5: Solve for x
    x = 64,406,167,578.84/288,882.20
  6. Step 6: Final answer
    x = 222,949.59

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1.5x scale

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.