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Finding the Fourth Proportional to 216,677.81, 324,958.38 and 76,418.21

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Solution

The fourth proportional to 216,677.81, 324,958.38 and 76,418.21 is: 114,606.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,677.81 : 324,958.38 = 76,418.21 : x
  2. Step 2: Convert to fraction form
    216,677.81/324,958.38 = 76,418.21/x
  3. Step 3: Cross multiply
    216,677.81x = 324,958.38 × 76,418.21
  4. Step 4: Simplify right side
    216,677.81x = 24,832,736,099.31
  5. Step 5: Solve for x
    x = 24,832,736,099.31/216,677.81
  6. Step 6: Final answer
    x = 114,606.74

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1.5x scale

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.