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Finding the Fourth Proportional to 238,590.85, 357,876.93 and 80,819.30

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Solution

The fourth proportional to 238,590.85, 357,876.93 and 80,819.30 is: 121,225.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,590.85 : 357,876.93 = 80,819.30 : x
  2. Step 2: Convert to fraction form
    238,590.85/357,876.93 = 80,819.30/x
  3. Step 3: Cross multiply
    238,590.85x = 357,876.93 × 80,819.30
  4. Step 4: Simplify right side
    238,590.85x = 28,923,362,218.33
  5. Step 5: Solve for x
    x = 28,923,362,218.33/238,590.85
  6. Step 6: Final answer
    x = 121,225.78

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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.