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Finding the Fourth Proportional to 204,561.66, 306,862.31 and 69,720.81

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Solution

The fourth proportional to 204,561.66, 306,862.31 and 69,720.81 is: 104,587.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,561.66 : 306,862.31 = 69,720.81 : x
  2. Step 2: Convert to fraction form
    204,561.66/306,862.31 = 69,720.81/x
  3. Step 3: Cross multiply
    204,561.66x = 306,862.31 × 69,720.81
  4. Step 4: Simplify right side
    204,561.66x = 21,394,688,811.67
  5. Step 5: Solve for x
    x = 21,394,688,811.67/204,561.66
  6. Step 6: Final answer
    x = 104,587.97

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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.