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Finding the Fourth Proportional to 248,545.20, 372,879.90 and 80,081.40

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Solution

The fourth proportional to 248,545.20, 372,879.90 and 80,081.40 is: 120,142.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,545.20 : 372,879.90 = 80,081.40 : x
  2. Step 2: Convert to fraction form
    248,545.20/372,879.90 = 80,081.40/x
  3. Step 3: Cross multiply
    248,545.20x = 372,879.90 × 80,081.40
  4. Step 4: Simplify right side
    248,545.20x = 29,860,744,423.86
  5. Step 5: Solve for x
    x = 29,860,744,423.86/248,545.20
  6. Step 6: Final answer
    x = 120,142.11

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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.