Home / 259,623.90-389,472.30-82,112.40

Finding the Fourth Proportional to 259,623.90, 389,472.30 and 82,112.40

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Solution

The fourth proportional to 259,623.90, 389,472.30 and 82,112.40 is: 123,180.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,623.90 : 389,472.30 = 82,112.40 : x
  2. Step 2: Convert to fraction form
    259,623.90/389,472.30 = 82,112.40/x
  3. Step 3: Cross multiply
    259,623.90x = 389,472.30 × 82,112.40
  4. Step 4: Simplify right side
    259,623.90x = 31,980,505,286.52
  5. Step 5: Solve for x
    x = 31,980,505,286.52/259,623.90
  6. Step 6: Final answer
    x = 123,180.13

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1.5x scale

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.