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Finding the Fourth Proportional to 206,028.55, 308,489.13 and 130,741.08

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Solution

The fourth proportional to 206,028.55, 308,489.13 and 130,741.08 is: 195,760.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,028.55 : 308,489.13 = 130,741.08 : x
  2. Step 2: Convert to fraction form
    206,028.55/308,489.13 = 130,741.08/x
  3. Step 3: Cross multiply
    206,028.55x = 308,489.13 × 130,741.08
  4. Step 4: Simplify right side
    206,028.55x = 40,332,200,867.63
  5. Step 5: Solve for x
    x = 40,332,200,867.63/206,028.55
  6. Step 6: Final answer
    x = 195,760.25

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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.