Home / 259,949.85-389,938.64-82,470.53

Finding the Fourth Proportional to 259,949.85, 389,938.64 and 82,470.53

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Solution

The fourth proportional to 259,949.85, 389,938.64 and 82,470.53 is: 123,710.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,949.85 : 389,938.64 = 82,470.53 : x
  2. Step 2: Convert to fraction form
    259,949.85/389,938.64 = 82,470.53/x
  3. Step 3: Cross multiply
    259,949.85x = 389,938.64 × 82,470.53
  4. Step 4: Simplify right side
    259,949.85x = 32,158,443,946.23
  5. Step 5: Solve for x
    x = 32,158,443,946.23/259,949.85
  6. Step 6: Final answer
    x = 123,710.18

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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.