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Finding the Fourth Proportional to 216,993.41, 299,450.90 and 121,502.15

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Solution

The fourth proportional to 216,993.41, 299,450.90 and 121,502.15 is: 167,672.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,993.41 : 299,450.90 = 121,502.15 : x
  2. Step 2: Convert to fraction form
    216,993.41/299,450.90 = 121,502.15/x
  3. Step 3: Cross multiply
    216,993.41x = 299,450.90 × 121,502.15
  4. Step 4: Simplify right side
    216,993.41x = 36,383,928,169.44
  5. Step 5: Solve for x
    x = 36,383,928,169.44/216,993.41
  6. Step 6: Final answer
    x = 167,672.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.