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Finding the Fourth Proportional to 306,046.91, 422,405.19 and 195,594.90

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Solution

The fourth proportional to 306,046.91, 422,405.19 and 195,594.90 is: 269,959.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,046.91 : 422,405.19 = 195,594.90 : x
  2. Step 2: Convert to fraction form
    306,046.91/422,405.19 = 195,594.90/x
  3. Step 3: Cross multiply
    306,046.91x = 422,405.19 × 195,594.90
  4. Step 4: Simplify right side
    306,046.91x = 82,620,300,897.53
  5. Step 5: Solve for x
    x = 82,620,300,897.53/306,046.91
  6. Step 6: Final answer
    x = 269,959.60

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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.