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Finding the Fourth Proportional to 266,858.55, 400,288.23 and 67,178.97

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Solution

The fourth proportional to 266,858.55, 400,288.23 and 67,178.97 is: 100,768.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,858.55 : 400,288.23 = 67,178.97 : x
  2. Step 2: Convert to fraction form
    266,858.55/400,288.23 = 67,178.97/x
  3. Step 3: Cross multiply
    266,858.55x = 400,288.23 × 67,178.97
  4. Step 4: Simplify right side
    266,858.55x = 26,890,950,994.52
  5. Step 5: Solve for x
    x = 26,890,950,994.52/266,858.55
  6. Step 6: Final answer
    x = 100,768.56

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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.