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Finding the Fourth Proportional to 578,989.22, 868,548 and 199,867

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Solution

The fourth proportional to 578,989.22, 868,548 and 199,867 is: 299,822.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,989.22 : 868,548 = 199,867 : x
  2. Step 2: Convert to fraction form
    578,989.22/868,548 = 199,867/x
  3. Step 3: Cross multiply
    578,989.22x = 868,548 × 199,867
  4. Step 4: Simplify right side
    578,989.22x = 173,594,083,116
  5. Step 5: Solve for x
    x = 173,594,083,116/578,989.22
  6. Step 6: Final answer
    x = 299,822.65

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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.