Home / 288,613.20-398,412.66-220,633.02

Finding the Fourth Proportional to 288,613.20, 398,412.66 and 220,633.02

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Solution

The fourth proportional to 288,613.20, 398,412.66 and 220,633.02 is: 304,570.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,613.20 : 398,412.66 = 220,633.02 : x
  2. Step 2: Convert to fraction form
    288,613.20/398,412.66 = 220,633.02/x
  3. Step 3: Cross multiply
    288,613.20x = 398,412.66 × 220,633.02
  4. Step 4: Simplify right side
    288,613.20x = 87,902,988,382.03
  5. Step 5: Solve for x
    x = 87,902,988,382.03/288,613.20
  6. Step 6: Final answer
    x = 304,570.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.