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Finding the Fourth Proportional to 216,787.89, 299,161.10 and 119,995.75

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Solution

The fourth proportional to 216,787.89, 299,161.10 and 119,995.75 is: 165,590.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,787.89 : 299,161.10 = 119,995.75 : x
  2. Step 2: Convert to fraction form
    216,787.89/299,161.10 = 119,995.75/x
  3. Step 3: Cross multiply
    216,787.89x = 299,161.10 × 119,995.75
  4. Step 4: Simplify right side
    216,787.89x = 35,898,061,405.68
  5. Step 5: Solve for x
    x = 35,898,061,405.68/216,787.89
  6. Step 6: Final answer
    x = 165,590.71

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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.