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Finding the Fourth Proportional to 248,572.20, 372,920.40 and 80,108.40

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Solution

The fourth proportional to 248,572.20, 372,920.40 and 80,108.40 is: 120,182.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,572.20 : 372,920.40 = 80,108.40 : x
  2. Step 2: Convert to fraction form
    248,572.20/372,920.40 = 80,108.40/x
  3. Step 3: Cross multiply
    248,572.20x = 372,920.40 × 80,108.40
  4. Step 4: Simplify right side
    248,572.20x = 29,874,056,571.36
  5. Step 5: Solve for x
    x = 29,874,056,571.36/248,572.20
  6. Step 6: Final answer
    x = 120,182.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.