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Finding the Fourth Proportional to 217,465.11, 325,929.94 and 103,672.87

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Solution

The fourth proportional to 217,465.11, 325,929.94 and 103,672.87 is: 155,381.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,465.11 : 325,929.94 = 103,672.87 : x
  2. Step 2: Convert to fraction form
    217,465.11/325,929.94 = 103,672.87/x
  3. Step 3: Cross multiply
    217,465.11x = 325,929.94 × 103,672.87
  4. Step 4: Simplify right side
    217,465.11x = 33,790,092,298.73
  5. Step 5: Solve for x
    x = 33,790,092,298.73/217,465.11
  6. Step 6: Final answer
    x = 155,381.67

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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.