Home / 259,717.20-389,628.45-147,451.20

Finding the Fourth Proportional to 259,717.20, 389,628.45 and 147,451.20

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Solution

The fourth proportional to 259,717.20, 389,628.45 and 147,451.20 is: 221,206.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,717.20 : 389,628.45 = 147,451.20 : x
  2. Step 2: Convert to fraction form
    259,717.20/389,628.45 = 147,451.20/x
  3. Step 3: Cross multiply
    259,717.20x = 389,628.45 × 147,451.20
  4. Step 4: Simplify right side
    259,717.20x = 57,451,182,506.64
  5. Step 5: Solve for x
    x = 57,451,182,506.64/259,717.20
  6. Step 6: Final answer
    x = 221,206.69

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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.