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Finding the Fourth Proportional to 547,218.92, 755,174.81 and 343,278.43

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Solution

The fourth proportional to 547,218.92, 755,174.81 and 343,278.43 is: 473,732.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,218.92 : 755,174.81 = 343,278.43 : x
  2. Step 2: Convert to fraction form
    547,218.92/755,174.81 = 343,278.43/x
  3. Step 3: Cross multiply
    547,218.92x = 755,174.81 × 343,278.43
  4. Step 4: Simplify right side
    547,218.92x = 259,235,222,122.61
  5. Step 5: Solve for x
    x = 259,235,222,122.61/547,218.92
  6. Step 6: Final answer
    x = 473,732.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.