Home / 269,275.20-403,912.80-79,742.40

Finding the Fourth Proportional to 269,275.20, 403,912.80 and 79,742.40

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Solution

The fourth proportional to 269,275.20, 403,912.80 and 79,742.40 is: 119,613.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,275.20 : 403,912.80 = 79,742.40 : x
  2. Step 2: Convert to fraction form
    269,275.20/403,912.80 = 79,742.40/x
  3. Step 3: Cross multiply
    269,275.20x = 403,912.80 × 79,742.40
  4. Step 4: Simplify right side
    269,275.20x = 32,208,976,062.72
  5. Step 5: Solve for x
    x = 32,208,976,062.72/269,275.20
  6. Step 6: Final answer
    x = 119,613.60

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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.