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Finding the Fourth Proportional to 342,797.12, 473,003.78 and 215,382.50

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Solution

The fourth proportional to 342,797.12, 473,003.78 and 215,382.50 is: 297,192.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,797.12 : 473,003.78 = 215,382.50 : x
  2. Step 2: Convert to fraction form
    342,797.12/473,003.78 = 215,382.50/x
  3. Step 3: Cross multiply
    342,797.12x = 473,003.78 × 215,382.50
  4. Step 4: Simplify right side
    342,797.12x = 101,876,736,645.85
  5. Step 5: Solve for x
    x = 101,876,736,645.85/342,797.12
  6. Step 6: Final answer
    x = 297,192.51

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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.