Home / 260,688.05-391,179.87-140,743.40

Finding the Fourth Proportional to 260,688.05, 391,179.87 and 140,743.40

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Solution

The fourth proportional to 260,688.05, 391,179.87 and 140,743.40 is: 211,194.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,688.05 : 391,179.87 = 140,743.40 : x
  2. Step 2: Convert to fraction form
    260,688.05/391,179.87 = 140,743.40/x
  3. Step 3: Cross multiply
    260,688.05x = 391,179.87 × 140,743.40
  4. Step 4: Simplify right side
    260,688.05x = 55,055,982,959.46
  5. Step 5: Solve for x
    x = 55,055,982,959.46/260,688.05
  6. Step 6: Final answer
    x = 211,194.89

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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.