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Finding the Fourth Proportional to 288,855.62, 398,613.32 and 159,790.74

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Solution

The fourth proportional to 288,855.62, 398,613.32 and 159,790.74 is: 220,507.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,855.62 : 398,613.32 = 159,790.74 : x
  2. Step 2: Convert to fraction form
    288,855.62/398,613.32 = 159,790.74/x
  3. Step 3: Cross multiply
    288,855.62x = 398,613.32 × 159,790.74
  4. Step 4: Simplify right side
    288,855.62x = 63,694,717,376.66
  5. Step 5: Solve for x
    x = 63,694,717,376.66/288,855.62
  6. Step 6: Final answer
    x = 220,507.11

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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.