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Finding the Fourth Proportional to 266,759.52, 399,931.56 and 133,571.28

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Solution

The fourth proportional to 266,759.52, 399,931.56 and 133,571.28 is: 200,252.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,759.52 : 399,931.56 = 133,571.28 : x
  2. Step 2: Convert to fraction form
    266,759.52/399,931.56 = 133,571.28/x
  3. Step 3: Cross multiply
    266,759.52x = 399,931.56 × 133,571.28
  4. Step 4: Simplify right side
    266,759.52x = 53,419,370,381.60
  5. Step 5: Solve for x
    x = 53,419,370,381.60/266,759.52
  6. Step 6: Final answer
    x = 200,252.91

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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.