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Finding the Fourth Proportional to 269,739.70, 404,609.55 and 129,426.10

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Solution

The fourth proportional to 269,739.70, 404,609.55 and 129,426.10 is: 194,139.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,739.70 : 404,609.55 = 129,426.10 : x
  2. Step 2: Convert to fraction form
    269,739.70/404,609.55 = 129,426.10/x
  3. Step 3: Cross multiply
    269,739.70x = 404,609.55 × 129,426.10
  4. Step 4: Simplify right side
    269,739.70x = 52,367,036,079.26
  5. Step 5: Solve for x
    x = 52,367,036,079.26/269,739.70
  6. Step 6: Final answer
    x = 194,139.15

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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.