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Finding the Fourth Proportional to 515,708.48, 773,599.98 and 215,887.52

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Solution

The fourth proportional to 515,708.48, 773,599.98 and 215,887.52 is: 323,846.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,708.48 : 773,599.98 = 215,887.52 : x
  2. Step 2: Convert to fraction form
    515,708.48/773,599.98 = 215,887.52/x
  3. Step 3: Cross multiply
    515,708.48x = 773,599.98 × 215,887.52
  4. Step 4: Simplify right side
    515,708.48x = 167,010,581,154.25
  5. Step 5: Solve for x
    x = 167,010,581,154.25/515,708.48
  6. Step 6: Final answer
    x = 323,846.88

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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.