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Finding the Fourth Proportional to 250,330.88, 375,544.65 and 81,805.75

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Solution

The fourth proportional to 250,330.88, 375,544.65 and 81,805.75 is: 122,724.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,330.88 : 375,544.65 = 81,805.75 : x
  2. Step 2: Convert to fraction form
    250,330.88/375,544.65 = 81,805.75/x
  3. Step 3: Cross multiply
    250,330.88x = 375,544.65 × 81,805.75
  4. Step 4: Simplify right side
    250,330.88x = 30,721,711,119.65
  5. Step 5: Solve for x
    x = 30,721,711,119.65/250,330.88
  6. Step 6: Final answer
    x = 122,724.42

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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.