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Finding the Fourth Proportional to 266,866.80, 400,300.61 and 67,187.22

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Solution

The fourth proportional to 266,866.80, 400,300.61 and 67,187.22 is: 100,780.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,866.80 : 400,300.61 = 67,187.22 : x
  2. Step 2: Convert to fraction form
    266,866.80/400,300.61 = 67,187.22/x
  3. Step 3: Cross multiply
    266,866.80x = 400,300.61 × 67,187.22
  4. Step 4: Simplify right side
    266,866.80x = 26,895,084,814.27
  5. Step 5: Solve for x
    x = 26,895,084,814.27/266,866.80
  6. Step 6: Final answer
    x = 100,780.93

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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.