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Finding the Fourth Proportional to 347,351.51, 520,755.10 and 137,146.79

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Solution

The fourth proportional to 347,351.51, 520,755.10 and 137,146.79 is: 205,612.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,351.51 : 520,755.10 = 137,146.79 : x
  2. Step 2: Convert to fraction form
    347,351.51/520,755.10 = 137,146.79/x
  3. Step 3: Cross multiply
    347,351.51x = 520,755.10 × 137,146.79
  4. Step 4: Simplify right side
    347,351.51x = 71,419,891,300.15
  5. Step 5: Solve for x
    x = 71,419,891,300.15/347,351.51
  6. Step 6: Final answer
    x = 205,612.73

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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.