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Finding the Fourth Proportional to 216,808.84, 325,213.26 and 142,919.56

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Solution

The fourth proportional to 216,808.84, 325,213.26 and 142,919.56 is: 214,379.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,808.84 : 325,213.26 = 142,919.56 : x
  2. Step 2: Convert to fraction form
    216,808.84/325,213.26 = 142,919.56/x
  3. Step 3: Cross multiply
    216,808.84x = 325,213.26 × 142,919.56
  4. Step 4: Simplify right side
    216,808.84x = 46,479,336,025.37
  5. Step 5: Solve for x
    x = 46,479,336,025.37/216,808.84
  6. Step 6: Final answer
    x = 214,379.34

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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.