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Finding the Fourth Proportional to 269,910.74, 404,795.36 and 80,320.26

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Solution

The fourth proportional to 269,910.74, 404,795.36 and 80,320.26 is: 120,459.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,910.74 : 404,795.36 = 80,320.26 : x
  2. Step 2: Convert to fraction form
    269,910.74/404,795.36 = 80,320.26/x
  3. Step 3: Cross multiply
    269,910.74x = 404,795.36 × 80,320.26
  4. Step 4: Simplify right side
    269,910.74x = 32,513,268,561.99
  5. Step 5: Solve for x
    x = 32,513,268,561.99/269,910.74
  6. Step 6: Final answer
    x = 120,459.34

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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.