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Finding the Fourth Proportional to 266,806.40, 400,072.80 and 79,793.60

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Solution

The fourth proportional to 266,806.40, 400,072.80 and 79,793.60 is: 119,649.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,806.40 : 400,072.80 = 79,793.60 : x
  2. Step 2: Convert to fraction form
    266,806.40/400,072.80 = 79,793.60/x
  3. Step 3: Cross multiply
    266,806.40x = 400,072.80 × 79,793.60
  4. Step 4: Simplify right side
    266,806.40x = 31,923,248,974.08
  5. Step 5: Solve for x
    x = 31,923,248,974.08/266,806.40
  6. Step 6: Final answer
    x = 119,649.49

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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.