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Finding the Fourth Proportional to 510,762.38, 766,187.64 and 131,679.90

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Solution

The fourth proportional to 510,762.38, 766,187.64 and 131,679.90 is: 197,531.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,762.38 : 766,187.64 = 131,679.90 : x
  2. Step 2: Convert to fraction form
    510,762.38/766,187.64 = 131,679.90/x
  3. Step 3: Cross multiply
    510,762.38x = 766,187.64 × 131,679.90
  4. Step 4: Simplify right side
    510,762.38x = 100,891,511,816.44
  5. Step 5: Solve for x
    x = 100,891,511,816.44/510,762.38
  6. Step 6: Final answer
    x = 197,531.21

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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.