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Finding the Fourth Proportional to 218,650.83, 328,002.52 and 206,693.41

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Solution

The fourth proportional to 218,650.83, 328,002.52 and 206,693.41 is: 310,064.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,650.83 : 328,002.52 = 206,693.41 : x
  2. Step 2: Convert to fraction form
    218,650.83/328,002.52 = 206,693.41/x
  3. Step 3: Cross multiply
    218,650.83x = 328,002.52 × 206,693.41
  4. Step 4: Simplify right side
    218,650.83x = 67,795,959,044.12
  5. Step 5: Solve for x
    x = 67,795,959,044.12/218,650.83
  6. Step 6: Final answer
    x = 310,064.95

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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.