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Finding the Fourth Proportional to 250,330, 375,578.80 and 81,858.08

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Solution

The fourth proportional to 250,330, 375,578.80 and 81,858.08 is: 122,814.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,330 : 375,578.80 = 81,858.08 : x
  2. Step 2: Convert to fraction form
    250,330/375,578.80 = 81,858.08/x
  3. Step 3: Cross multiply
    250,330x = 375,578.80 × 81,858.08
  4. Step 4: Simplify right side
    250,330x = 30,744,159,456.70
  5. Step 5: Solve for x
    x = 30,744,159,456.70/250,330
  6. Step 6: Final answer
    x = 122,814.52

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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.