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Finding the Fourth Proportional to 217,010, 325,691.58 and 111,859.04

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Solution

The fourth proportional to 217,010, 325,691.58 and 111,859.04 is: 167,879.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,010 : 325,691.58 = 111,859.04 : x
  2. Step 2: Convert to fraction form
    217,010/325,691.58 = 111,859.04/x
  3. Step 3: Cross multiply
    217,010x = 325,691.58 × 111,859.04
  4. Step 4: Simplify right side
    217,010x = 36,431,547,474.88
  5. Step 5: Solve for x
    x = 36,431,547,474.88/217,010
  6. Step 6: Final answer
    x = 167,879.58

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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.