Home / 272,788.20-408,919.83-139,731.12

Finding the Fourth Proportional to 272,788.20, 408,919.83 and 139,731.12

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Solution

The fourth proportional to 272,788.20, 408,919.83 and 139,731.12 is: 209,462.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,788.20 : 408,919.83 = 139,731.12 : x
  2. Step 2: Convert to fraction form
    272,788.20/408,919.83 = 139,731.12/x
  3. Step 3: Cross multiply
    272,788.20x = 408,919.83 × 139,731.12
  4. Step 4: Simplify right side
    272,788.20x = 57,138,825,836.11
  5. Step 5: Solve for x
    x = 57,138,825,836.11/272,788.20
  6. Step 6: Final answer
    x = 209,462.23

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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.