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Finding the Fourth Proportional to 269,313.72, 403,832.16 and 79,750.28

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Solution

The fourth proportional to 269,313.72, 403,832.16 and 79,750.28 is: 119,584.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,313.72 : 403,832.16 = 79,750.28 : x
  2. Step 2: Convert to fraction form
    269,313.72/403,832.16 = 79,750.28/x
  3. Step 3: Cross multiply
    269,313.72x = 403,832.16 × 79,750.28
  4. Step 4: Simplify right side
    269,313.72x = 32,205,727,143.38
  5. Step 5: Solve for x
    x = 32,205,727,143.38/269,313.72
  6. Step 6: Final answer
    x = 119,584.43

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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.