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Finding the Fourth Proportional to 266,076.20, 399,114.30 and 123,921.20

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Solution

The fourth proportional to 266,076.20, 399,114.30 and 123,921.20 is: 185,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,076.20 : 399,114.30 = 123,921.20 : x
  2. Step 2: Convert to fraction form
    266,076.20/399,114.30 = 123,921.20/x
  3. Step 3: Cross multiply
    266,076.20x = 399,114.30 × 123,921.20
  4. Step 4: Simplify right side
    266,076.20x = 49,458,722,993.16
  5. Step 5: Solve for x
    x = 49,458,722,993.16/266,076.20
  6. Step 6: Final answer
    x = 185,881.80

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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.