Home / 259,430.76-389,296.20-109,661.40

Finding the Fourth Proportional to 259,430.76, 389,296.20 and 109,661.40

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Solution

The fourth proportional to 259,430.76, 389,296.20 and 109,661.40 is: 164,555.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,430.76 : 389,296.20 = 109,661.40 : x
  2. Step 2: Convert to fraction form
    259,430.76/389,296.20 = 109,661.40/x
  3. Step 3: Cross multiply
    259,430.76x = 389,296.20 × 109,661.40
  4. Step 4: Simplify right side
    259,430.76x = 42,690,766,306.68
  5. Step 5: Solve for x
    x = 42,690,766,306.68/259,430.76
  6. Step 6: Final answer
    x = 164,555.53

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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.