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Finding the Fourth Proportional to 259,449.30, 388,882.35 and 133,040.70

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Solution

The fourth proportional to 259,449.30, 388,882.35 and 133,040.70 is: 199,411.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,449.30 : 388,882.35 = 133,040.70 : x
  2. Step 2: Convert to fraction form
    259,449.30/388,882.35 = 133,040.70/x
  3. Step 3: Cross multiply
    259,449.30x = 388,882.35 × 133,040.70
  4. Step 4: Simplify right side
    259,449.30x = 51,737,180,061.65
  5. Step 5: Solve for x
    x = 51,737,180,061.65/259,449.30
  6. Step 6: Final answer
    x = 199,411.52

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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.