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Finding the Fourth Proportional to 216,906.10, 325,359.15 and 111,930.10

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Solution

The fourth proportional to 216,906.10, 325,359.15 and 111,930.10 is: 167,895.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,906.10 : 325,359.15 = 111,930.10 : x
  2. Step 2: Convert to fraction form
    216,906.10/325,359.15 = 111,930.10/x
  3. Step 3: Cross multiply
    216,906.10x = 325,359.15 × 111,930.10
  4. Step 4: Simplify right side
    216,906.10x = 36,417,482,195.42
  5. Step 5: Solve for x
    x = 36,417,482,195.42/216,906.10
  6. Step 6: Final answer
    x = 167,895.15

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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.