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Finding the Fourth Proportional to 266,544.45, 399,757.70 and 76,963.67

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Solution

The fourth proportional to 266,544.45, 399,757.70 and 76,963.67 is: 115,428.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,544.45 : 399,757.70 = 76,963.67 : x
  2. Step 2: Convert to fraction form
    266,544.45/399,757.70 = 76,963.67/x
  3. Step 3: Cross multiply
    266,544.45x = 399,757.70 × 76,963.67
  4. Step 4: Simplify right side
    266,544.45x = 30,766,818,895.77
  5. Step 5: Solve for x
    x = 30,766,818,895.77/266,544.45
  6. Step 6: Final answer
    x = 115,428.47

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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.