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Finding the Fourth Proportional to 342,947.43, 473,391.68 and 279,174.51

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Solution

The fourth proportional to 342,947.43, 473,391.68 and 279,174.51 is: 385,361.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,947.43 : 473,391.68 = 279,174.51 : x
  2. Step 2: Convert to fraction form
    342,947.43/473,391.68 = 279,174.51/x
  3. Step 3: Cross multiply
    342,947.43x = 473,391.68 × 279,174.51
  4. Step 4: Simplify right side
    342,947.43x = 132,158,888,906.20
  5. Step 5: Solve for x
    x = 132,158,888,906.20/342,947.43
  6. Step 6: Final answer
    x = 385,361.95

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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.