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Finding the Fourth Proportional to 285,194.91, 428,212.90 and 159,081.55

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Solution

The fourth proportional to 285,194.91, 428,212.90 and 159,081.55 is: 238,856.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,194.91 : 428,212.90 = 159,081.55 : x
  2. Step 2: Convert to fraction form
    285,194.91/428,212.90 = 159,081.55/x
  3. Step 3: Cross multiply
    285,194.91x = 428,212.90 × 159,081.55
  4. Step 4: Simplify right side
    285,194.91x = 68,120,771,862.00
  5. Step 5: Solve for x
    x = 68,120,771,862.00/285,194.91
  6. Step 6: Final answer
    x = 238,856.90

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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.