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Finding the Fourth Proportional to 514,694.80, 772,047.96 and 215,220.88

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Solution

The fourth proportional to 514,694.80, 772,047.96 and 215,220.88 is: 322,833.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,694.80 : 772,047.96 = 215,220.88 : x
  2. Step 2: Convert to fraction form
    514,694.80/772,047.96 = 215,220.88/x
  3. Step 3: Cross multiply
    514,694.80x = 772,047.96 × 215,220.88
  4. Step 4: Simplify right side
    514,694.80x = 166,160,841,353.41
  5. Step 5: Solve for x
    x = 166,160,841,353.41/514,694.80
  6. Step 6: Final answer
    x = 322,833.73

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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.