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Finding the Fourth Proportional to 261,360.91, 391,994.52 and 69,236.62

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Solution

The fourth proportional to 261,360.91, 391,994.52 and 69,236.62 is: 103,842.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,360.91 : 391,994.52 = 69,236.62 : x
  2. Step 2: Convert to fraction form
    261,360.91/391,994.52 = 69,236.62/x
  3. Step 3: Cross multiply
    261,360.91x = 391,994.52 × 69,236.62
  4. Step 4: Simplify right side
    261,360.91x = 27,140,375,623.32
  5. Step 5: Solve for x
    x = 27,140,375,623.32/261,360.91
  6. Step 6: Final answer
    x = 103,842.52

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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.