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Finding the Fourth Proportional to 269,272.20, 403,908.30 and 79,739.40

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Solution

The fourth proportional to 269,272.20, 403,908.30 and 79,739.40 is: 119,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,272.20 : 403,908.30 = 79,739.40 : x
  2. Step 2: Convert to fraction form
    269,272.20/403,908.30 = 79,739.40/x
  3. Step 3: Cross multiply
    269,272.20x = 403,908.30 × 79,739.40
  4. Step 4: Simplify right side
    269,272.20x = 32,207,405,497.02
  5. Step 5: Solve for x
    x = 32,207,405,497.02/269,272.20
  6. Step 6: Final answer
    x = 119,609.10

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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.