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Finding the Fourth Proportional to 308,382.54, 425,584.14 and 187,503.80

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Solution

The fourth proportional to 308,382.54, 425,584.14 and 187,503.80 is: 258,765.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,382.54 : 425,584.14 = 187,503.80 : x
  2. Step 2: Convert to fraction form
    308,382.54/425,584.14 = 187,503.80/x
  3. Step 3: Cross multiply
    308,382.54x = 425,584.14 × 187,503.80
  4. Step 4: Simplify right side
    308,382.54x = 79,798,643,469.73
  5. Step 5: Solve for x
    x = 79,798,643,469.73/308,382.54
  6. Step 6: Final answer
    x = 258,765.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.