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Finding the Fourth Proportional to 217,111, 325,672.90 and 185,320.62

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Solution

The fourth proportional to 217,111, 325,672.90 and 185,320.62 is: 277,986.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,111 : 325,672.90 = 185,320.62 : x
  2. Step 2: Convert to fraction form
    217,111/325,672.90 = 185,320.62/x
  3. Step 3: Cross multiply
    217,111x = 325,672.90 × 185,320.62
  4. Step 4: Simplify right side
    217,111x = 60,353,903,745.20
  5. Step 5: Solve for x
    x = 60,353,903,745.20/217,111
  6. Step 6: Final answer
    x = 277,986.39

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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.