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Finding the Fourth Proportional to 515,757.88, 773,600.30 and 136,670.22

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Solution

The fourth proportional to 515,757.88, 773,600.30 and 136,670.22 is: 204,995.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,757.88 : 773,600.30 = 136,670.22 : x
  2. Step 2: Convert to fraction form
    515,757.88/773,600.30 = 136,670.22/x
  3. Step 3: Cross multiply
    515,757.88x = 773,600.30 × 136,670.22
  4. Step 4: Simplify right side
    515,757.88x = 105,728,123,193.07
  5. Step 5: Solve for x
    x = 105,728,123,193.07/515,757.88
  6. Step 6: Final answer
    x = 204,995.65

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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.