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Finding the Fourth Proportional to 295,436.88, 408,042.36 and 215,223.12

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Solution

The fourth proportional to 295,436.88, 408,042.36 and 215,223.12 is: 297,255.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,436.88 : 408,042.36 = 215,223.12 : x
  2. Step 2: Convert to fraction form
    295,436.88/408,042.36 = 215,223.12/x
  3. Step 3: Cross multiply
    295,436.88x = 408,042.36 × 215,223.12
  4. Step 4: Simplify right side
    295,436.88x = 87,820,149,811.36
  5. Step 5: Solve for x
    x = 87,820,149,811.36/295,436.88
  6. Step 6: Final answer
    x = 297,255.20

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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.