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Finding the Fourth Proportional to 218,219.97, 300,972.58 and 149,350.17

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Solution

The fourth proportional to 218,219.97, 300,972.58 and 149,350.17 is: 205,986.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,219.97 : 300,972.58 = 149,350.17 : x
  2. Step 2: Convert to fraction form
    218,219.97/300,972.58 = 149,350.17/x
  3. Step 3: Cross multiply
    218,219.97x = 300,972.58 × 149,350.17
  4. Step 4: Simplify right side
    218,219.97x = 44,950,305,614.96
  5. Step 5: Solve for x
    x = 44,950,305,614.96/218,219.97
  6. Step 6: Final answer
    x = 205,986.21

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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.