Home / 260,703.12-391,202.40-140,758.38

Finding the Fourth Proportional to 260,703.12, 391,202.40 and 140,758.38

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Solution

The fourth proportional to 260,703.12, 391,202.40 and 140,758.38 is: 211,217.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,703.12 : 391,202.40 = 140,758.38 : x
  2. Step 2: Convert to fraction form
    260,703.12/391,202.40 = 140,758.38/x
  3. Step 3: Cross multiply
    260,703.12x = 391,202.40 × 140,758.38
  4. Step 4: Simplify right side
    260,703.12x = 55,065,016,076.11
  5. Step 5: Solve for x
    x = 55,065,016,076.11/260,703.12
  6. Step 6: Final answer
    x = 211,217.33

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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.