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Finding the Fourth Proportional to 216,993, 325,489.56 and 104,652.30

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Solution

The fourth proportional to 216,993, 325,489.56 and 104,652.30 is: 156,978.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,993 : 325,489.56 = 104,652.30 : x
  2. Step 2: Convert to fraction form
    216,993/325,489.56 = 104,652.30/x
  3. Step 3: Cross multiply
    216,993x = 325,489.56 × 104,652.30
  4. Step 4: Simplify right side
    216,993x = 34,063,231,079.99
  5. Step 5: Solve for x
    x = 34,063,231,079.99/216,993
  6. Step 6: Final answer
    x = 156,978.48

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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.