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Finding the Fourth Proportional to 515,227.70, 772,843.53 and 215,498.03

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Solution

The fourth proportional to 515,227.70, 772,843.53 and 215,498.03 is: 323,247.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,227.70 : 772,843.53 = 215,498.03 : x
  2. Step 2: Convert to fraction form
    515,227.70/772,843.53 = 215,498.03/x
  3. Step 3: Cross multiply
    515,227.70x = 772,843.53 × 215,498.03
  4. Step 4: Simplify right side
    515,227.70x = 166,546,254,349.03
  5. Step 5: Solve for x
    x = 166,546,254,349.03/515,227.70
  6. Step 6: Final answer
    x = 323,247.86

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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.