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Finding the Fourth Proportional to 260,997.34, 391,498.32 and 103,225.81

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Solution

The fourth proportional to 260,997.34, 391,498.32 and 103,225.81 is: 154,839.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,997.34 : 391,498.32 = 103,225.81 : x
  2. Step 2: Convert to fraction form
    260,997.34/391,498.32 = 103,225.81/x
  3. Step 3: Cross multiply
    260,997.34x = 391,498.32 × 103,225.81
  4. Step 4: Simplify right side
    260,997.34x = 40,412,728,722.02
  5. Step 5: Solve for x
    x = 40,412,728,722.02/260,997.34
  6. Step 6: Final answer
    x = 154,839.62

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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.