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Finding the Fourth Proportional to 347,356.10, 521,034.15 and 343,669.70

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Solution

The fourth proportional to 347,356.10, 521,034.15 and 343,669.70 is: 515,504.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,356.10 : 521,034.15 = 343,669.70 : x
  2. Step 2: Convert to fraction form
    347,356.10/521,034.15 = 343,669.70/x
  3. Step 3: Cross multiply
    347,356.10x = 521,034.15 × 343,669.70
  4. Step 4: Simplify right side
    347,356.10x = 179,063,650,020.26
  5. Step 5: Solve for x
    x = 179,063,650,020.26/347,356.10
  6. Step 6: Final answer
    x = 515,504.55

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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.