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Finding the Fourth Proportional to 342,796.62, 473,003.10 and 215,382

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Solution

The fourth proportional to 342,796.62, 473,003.10 and 215,382 is: 297,191.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,796.62 : 473,003.10 = 215,382 : x
  2. Step 2: Convert to fraction form
    342,796.62/473,003.10 = 215,382/x
  3. Step 3: Cross multiply
    342,796.62x = 473,003.10 × 215,382
  4. Step 4: Simplify right side
    342,796.62x = 101,876,353,684.20
  5. Step 5: Solve for x
    x = 101,876,353,684.20/342,796.62
  6. Step 6: Final answer
    x = 297,191.83

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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.