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Finding the Fourth Proportional to 515,958.73, 773,972.21 and 136,874.14

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Solution

The fourth proportional to 515,958.73, 773,972.21 and 136,874.14 is: 205,320.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,958.73 : 773,972.21 = 136,874.14 : x
  2. Step 2: Convert to fraction form
    515,958.73/773,972.21 = 136,874.14/x
  3. Step 3: Cross multiply
    515,958.73x = 773,972.21 × 136,874.14
  4. Step 4: Simplify right side
    515,958.73x = 105,936,779,034.90
  5. Step 5: Solve for x
    x = 105,936,779,034.90/515,958.73
  6. Step 6: Final answer
    x = 205,320.26

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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.