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Finding the Fourth Proportional to 266,720.78, 399,998.12 and 89,186.27

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Solution

The fourth proportional to 266,720.78, 399,998.12 and 89,186.27 is: 133,751.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,720.78 : 399,998.12 = 89,186.27 : x
  2. Step 2: Convert to fraction form
    266,720.78/399,998.12 = 89,186.27/x
  3. Step 3: Cross multiply
    266,720.78x = 399,998.12 × 89,186.27
  4. Step 4: Simplify right side
    266,720.78x = 35,674,337,883.89
  5. Step 5: Solve for x
    x = 35,674,337,883.89/266,720.78
  6. Step 6: Final answer
    x = 133,751.62

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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.