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Finding the Fourth Proportional to 342,218.56, 472,264.75 and 189,248.85

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Solution

The fourth proportional to 342,218.56, 472,264.75 and 189,248.85 is: 261,165.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,218.56 : 472,264.75 = 189,248.85 : x
  2. Step 2: Convert to fraction form
    342,218.56/472,264.75 = 189,248.85/x
  3. Step 3: Cross multiply
    342,218.56x = 472,264.75 × 189,248.85
  4. Step 4: Simplify right side
    342,218.56x = 89,375,560,833.04
  5. Step 5: Solve for x
    x = 89,375,560,833.04/342,218.56
  6. Step 6: Final answer
    x = 261,165.15

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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.