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Finding the Fourth Proportional to 250,143.71, 345,251.93 and 159,478.79

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Solution

The fourth proportional to 250,143.71, 345,251.93 and 159,478.79 is: 220,114.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,143.71 : 345,251.93 = 159,478.79 : x
  2. Step 2: Convert to fraction form
    250,143.71/345,251.93 = 159,478.79/x
  3. Step 3: Cross multiply
    250,143.71x = 345,251.93 × 159,478.79
  4. Step 4: Simplify right side
    250,143.71x = 55,060,357,517.91
  5. Step 5: Solve for x
    x = 55,060,357,517.91/250,143.71
  6. Step 6: Final answer
    x = 220,114.90

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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.