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Finding the Fourth Proportional to 266,422.02, 399,623.82 and 66,744.12

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Solution

The fourth proportional to 266,422.02, 399,623.82 and 66,744.12 is: 100,113.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,422.02 : 399,623.82 = 66,744.12 : x
  2. Step 2: Convert to fraction form
    266,422.02/399,623.82 = 66,744.12/x
  3. Step 3: Cross multiply
    266,422.02x = 399,623.82 × 66,744.12
  4. Step 4: Simplify right side
    266,422.02x = 26,672,540,196.94
  5. Step 5: Solve for x
    x = 26,672,540,196.94/266,422.02
  6. Step 6: Final answer
    x = 100,113.87

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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.