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Finding the Fourth Proportional to 266,393.34, 399,787.20 and 126,152.28

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Solution

The fourth proportional to 266,393.34, 399,787.20 and 126,152.28 is: 189,321.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,393.34 : 399,787.20 = 126,152.28 : x
  2. Step 2: Convert to fraction form
    266,393.34/399,787.20 = 126,152.28/x
  3. Step 3: Cross multiply
    266,393.34x = 399,787.20 × 126,152.28
  4. Step 4: Simplify right side
    266,393.34x = 50,434,066,794.82
  5. Step 5: Solve for x
    x = 50,434,066,794.82/266,393.34
  6. Step 6: Final answer
    x = 189,321.80

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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.