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Finding the Fourth Proportional to 343,989.57, 516,046.34 and 141,549.91

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Solution

The fourth proportional to 343,989.57, 516,046.34 and 141,549.91 is: 212,350.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,989.57 : 516,046.34 = 141,549.91 : x
  2. Step 2: Convert to fraction form
    343,989.57/516,046.34 = 141,549.91/x
  3. Step 3: Cross multiply
    343,989.57x = 516,046.34 × 141,549.91
  4. Step 4: Simplify right side
    343,989.57x = 73,046,314,949.35
  5. Step 5: Solve for x
    x = 73,046,314,949.35/343,989.57
  6. Step 6: Final answer
    x = 212,350.38

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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.