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Finding the Fourth Proportional to 260,816.72, 391,234.79 and 92,354.81

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Solution

The fourth proportional to 260,816.72, 391,234.79 and 92,354.81 is: 138,535.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,816.72 : 391,234.79 = 92,354.81 : x
  2. Step 2: Convert to fraction form
    260,816.72/391,234.79 = 92,354.81/x
  3. Step 3: Cross multiply
    260,816.72x = 391,234.79 × 92,354.81
  4. Step 4: Simplify right side
    260,816.72x = 36,132,412,970.55
  5. Step 5: Solve for x
    x = 36,132,412,970.55/260,816.72
  6. Step 6: Final answer
    x = 138,535.65

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1.5x scale

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.