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Finding the Fourth Proportional to 217,171.87, 325,756.70 and 55,065.95

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Solution

The fourth proportional to 217,171.87, 325,756.70 and 55,065.95 is: 82,598.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,171.87 : 325,756.70 = 55,065.95 : x
  2. Step 2: Convert to fraction form
    217,171.87/325,756.70 = 55,065.95/x
  3. Step 3: Cross multiply
    217,171.87x = 325,756.70 × 55,065.95
  4. Step 4: Simplify right side
    217,171.87x = 17,938,101,879.04
  5. Step 5: Solve for x
    x = 17,938,101,879.04/217,171.87
  6. Step 6: Final answer
    x = 82,598.65

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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.