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Finding the Fourth Proportional to 269,219.80, 403,829.70 and 265,720.60

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Solution

The fourth proportional to 269,219.80, 403,829.70 and 265,720.60 is: 398,580.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,219.80 : 403,829.70 = 265,720.60 : x
  2. Step 2: Convert to fraction form
    269,219.80/403,829.70 = 265,720.60/x
  3. Step 3: Cross multiply
    269,219.80x = 403,829.70 × 265,720.60
  4. Step 4: Simplify right side
    269,219.80x = 107,305,870,181.82
  5. Step 5: Solve for x
    x = 107,305,870,181.82/269,219.80
  6. Step 6: Final answer
    x = 398,580.90

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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.