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Finding the Fourth Proportional to 260,859.30, 391,288.95 and 248,612.10

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Solution

The fourth proportional to 260,859.30, 391,288.95 and 248,612.10 is: 372,918.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,859.30 : 391,288.95 = 248,612.10 : x
  2. Step 2: Convert to fraction form
    260,859.30/391,288.95 = 248,612.10/x
  3. Step 3: Cross multiply
    260,859.30x = 391,288.95 × 248,612.10
  4. Step 4: Simplify right side
    260,859.30x = 97,279,167,566.30
  5. Step 5: Solve for x
    x = 97,279,167,566.30/260,859.30
  6. Step 6: Final answer
    x = 372,918.15

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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.