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Finding the Fourth Proportional to 266,266.89, 399,167.06 and 100,171.53

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Solution

The fourth proportional to 266,266.89, 399,167.06 and 100,171.53 is: 150,169.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,266.89 : 399,167.06 = 100,171.53 : x
  2. Step 2: Convert to fraction form
    266,266.89/399,167.06 = 100,171.53/x
  3. Step 3: Cross multiply
    266,266.89x = 399,167.06 × 100,171.53
  4. Step 4: Simplify right side
    266,266.89x = 39,985,174,624.94
  5. Step 5: Solve for x
    x = 39,985,174,624.94/266,266.89
  6. Step 6: Final answer
    x = 150,169.53

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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.