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Finding the Fourth Proportional to 515,229.71, 772,846.53 and 215,500.04

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Solution

The fourth proportional to 515,229.71, 772,846.53 and 215,500.04 is: 323,250.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,229.71 : 772,846.53 = 215,500.04 : x
  2. Step 2: Convert to fraction form
    515,229.71/772,846.53 = 215,500.04/x
  3. Step 3: Cross multiply
    515,229.71x = 772,846.53 × 215,500.04
  4. Step 4: Simplify right side
    515,229.71x = 166,548,458,128.86
  5. Step 5: Solve for x
    x = 166,548,458,128.86/515,229.71
  6. Step 6: Final answer
    x = 323,250.88

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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.