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Finding the Fourth Proportional to 266,555.34, 399,773.97 and 76,974.44

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Solution

The fourth proportional to 266,555.34, 399,773.97 and 76,974.44 is: 115,444.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,555.34 : 399,773.97 = 76,974.44 : x
  2. Step 2: Convert to fraction form
    266,555.34/399,773.97 = 76,974.44/x
  3. Step 3: Cross multiply
    266,555.34x = 399,773.97 × 76,974.44
  4. Step 4: Simplify right side
    266,555.34x = 30,772,375,468.46
  5. Step 5: Solve for x
    x = 30,772,375,468.46/266,555.34
  6. Step 6: Final answer
    x = 115,444.60

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1.5x scale

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.