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Finding the Fourth Proportional to 288,855.88, 398,613.65 and 159,791.00

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Solution

The fourth proportional to 288,855.88, 398,613.65 and 159,791.00 is: 220,507.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,855.88 : 398,613.65 = 159,791.00 : x
  2. Step 2: Convert to fraction form
    288,855.88/398,613.65 = 159,791.00/x
  3. Step 3: Cross multiply
    288,855.88x = 398,613.65 × 159,791.00
  4. Step 4: Simplify right side
    288,855.88x = 63,694,870,955.13
  5. Step 5: Solve for x
    x = 63,694,870,955.13/288,855.88
  6. Step 6: Final answer
    x = 220,507.44

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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.