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Finding the Fourth Proportional to 515,344.36, 773,008.86 and 178,630.12

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Solution

The fourth proportional to 515,344.36, 773,008.86 and 178,630.12 is: 267,942.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,344.36 : 773,008.86 = 178,630.12 : x
  2. Step 2: Convert to fraction form
    515,344.36/773,008.86 = 178,630.12/x
  3. Step 3: Cross multiply
    515,344.36x = 773,008.86 × 178,630.12
  4. Step 4: Simplify right side
    515,344.36x = 138,082,665,422.86
  5. Step 5: Solve for x
    x = 138,082,665,422.86/515,344.36
  6. Step 6: Final answer
    x = 267,942.52

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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.