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Finding the Fourth Proportional to 510,449.90, 765,669.63 and 131,369.15

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Solution

The fourth proportional to 510,449.90, 765,669.63 and 131,369.15 is: 197,052.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,449.90 : 765,669.63 = 131,369.15 : x
  2. Step 2: Convert to fraction form
    510,449.90/765,669.63 = 131,369.15/x
  3. Step 3: Cross multiply
    510,449.90x = 765,669.63 × 131,369.15
  4. Step 4: Simplify right side
    510,449.90x = 100,585,367,024.19
  5. Step 5: Solve for x
    x = 100,585,367,024.19/510,449.90
  6. Step 6: Final answer
    x = 197,052.38

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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.