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Finding the Fourth Proportional to 521,561.62, 782,454.81 and 161,725.23

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Solution

The fourth proportional to 521,561.62, 782,454.81 and 161,725.23 is: 242,622.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,561.62 : 782,454.81 = 161,725.23 : x
  2. Step 2: Convert to fraction form
    521,561.62/782,454.81 = 161,725.23/x
  3. Step 3: Cross multiply
    521,561.62x = 782,454.81 × 161,725.23
  4. Step 4: Simplify right side
    521,561.62x = 126,542,684,718.33
  5. Step 5: Solve for x
    x = 126,542,684,718.33/521,561.62
  6. Step 6: Final answer
    x = 242,622.69

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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.