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Finding the Fourth Proportional to 266,533.61, 399,741.46 and 76,952.75

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Solution

The fourth proportional to 266,533.61, 399,741.46 and 76,952.75 is: 115,412.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,533.61 : 399,741.46 = 76,952.75 : x
  2. Step 2: Convert to fraction form
    266,533.61/399,741.46 = 76,952.75/x
  3. Step 3: Cross multiply
    266,533.61x = 399,741.46 × 76,952.75
  4. Step 4: Simplify right side
    266,533.61x = 30,761,205,126.33
  5. Step 5: Solve for x
    x = 30,761,205,126.33/266,533.61
  6. Step 6: Final answer
    x = 115,412.11

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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.