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Finding the Fourth Proportional to 220,252.75, 303,923.01 and 129,588.79

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Solution

The fourth proportional to 220,252.75, 303,923.01 and 129,588.79 is: 178,817.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,252.75 : 303,923.01 = 129,588.79 : x
  2. Step 2: Convert to fraction form
    220,252.75/303,923.01 = 129,588.79/x
  3. Step 3: Cross multiply
    220,252.75x = 303,923.01 × 129,588.79
  4. Step 4: Simplify right side
    220,252.75x = 39,385,015,119.06
  5. Step 5: Solve for x
    x = 39,385,015,119.06/220,252.75
  6. Step 6: Final answer
    x = 178,817.36

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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.