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Finding the Fourth Proportional to 269,999.40, 404,999.10 and 80,459.40

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Solution

The fourth proportional to 269,999.40, 404,999.10 and 80,459.40 is: 120,689.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,999.40 : 404,999.10 = 80,459.40 : x
  2. Step 2: Convert to fraction form
    269,999.40/404,999.10 = 80,459.40/x
  3. Step 3: Cross multiply
    269,999.40x = 404,999.10 × 80,459.40
  4. Step 4: Simplify right side
    269,999.40x = 32,585,984,586.54
  5. Step 5: Solve for x
    x = 32,585,984,586.54/269,999.40
  6. Step 6: Final answer
    x = 120,689.10

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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.