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Finding the Fourth Proportional to 308,299.25, 425,334.84 and 187,396.43

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Solution

The fourth proportional to 308,299.25, 425,334.84 and 187,396.43 is: 258,535.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,299.25 : 425,334.84 = 187,396.43 : x
  2. Step 2: Convert to fraction form
    308,299.25/425,334.84 = 187,396.43/x
  3. Step 3: Cross multiply
    308,299.25x = 425,334.84 × 187,396.43
  4. Step 4: Simplify right side
    308,299.25x = 79,706,228,443.95
  5. Step 5: Solve for x
    x = 79,706,228,443.95/308,299.25
  6. Step 6: Final answer
    x = 258,535.27

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1.5x scale

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.