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Finding the Fourth Proportional to 218,411.67, 327,617.13 and 68,665.05

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Solution

The fourth proportional to 218,411.67, 327,617.13 and 68,665.05 is: 102,997.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,411.67 : 327,617.13 = 68,665.05 : x
  2. Step 2: Convert to fraction form
    218,411.67/327,617.13 = 68,665.05/x
  3. Step 3: Cross multiply
    218,411.67x = 327,617.13 × 68,665.05
  4. Step 4: Simplify right side
    218,411.67x = 22,495,846,612.31
  5. Step 5: Solve for x
    x = 22,495,846,612.31/218,411.67
  6. Step 6: Final answer
    x = 102,997.46

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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.