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Finding the Fourth Proportional to 260,699.39, 391,196.99 and 140,754.73

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Solution

The fourth proportional to 260,699.39, 391,196.99 and 140,754.73 is: 211,211.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,699.39 : 391,196.99 = 140,754.73 : x
  2. Step 2: Convert to fraction form
    260,699.39/391,196.99 = 140,754.73/x
  3. Step 3: Cross multiply
    260,699.39x = 391,196.99 × 140,754.73
  4. Step 4: Simplify right side
    260,699.39x = 55,062,827,056.15
  5. Step 5: Solve for x
    x = 55,062,827,056.15/260,699.39
  6. Step 6: Final answer
    x = 211,211.96

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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.