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Finding the Fourth Proportional to 518,540.90, 777,633.15 and 252,129.74

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Solution

The fourth proportional to 518,540.90, 777,633.15 and 252,129.74 is: 378,107.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,540.90 : 777,633.15 = 252,129.74 : x
  2. Step 2: Convert to fraction form
    518,540.90/777,633.15 = 252,129.74/x
  3. Step 3: Cross multiply
    518,540.90x = 777,633.15 × 252,129.74
  4. Step 4: Simplify right side
    518,540.90x = 196,064,443,924.88
  5. Step 5: Solve for x
    x = 196,064,443,924.88/518,540.90
  6. Step 6: Final answer
    x = 378,107.96

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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.