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Finding the Fourth Proportional to 207,237.30, 285,987.90 and 122,359.80

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Solution

The fourth proportional to 207,237.30, 285,987.90 and 122,359.80 is: 168,856.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,237.30 : 285,987.90 = 122,359.80 : x
  2. Step 2: Convert to fraction form
    207,237.30/285,987.90 = 122,359.80/x
  3. Step 3: Cross multiply
    207,237.30x = 285,987.90 × 122,359.80
  4. Step 4: Simplify right side
    207,237.30x = 34,993,422,246.42
  5. Step 5: Solve for x
    x = 34,993,422,246.42/207,237.30
  6. Step 6: Final answer
    x = 168,856.78

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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.