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Finding the Fourth Proportional to 212,324.13, 318,486.22 and 54,552.58

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Solution

The fourth proportional to 212,324.13, 318,486.22 and 54,552.58 is: 81,828.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,324.13 : 318,486.22 = 54,552.58 : x
  2. Step 2: Convert to fraction form
    212,324.13/318,486.22 = 54,552.58/x
  3. Step 3: Cross multiply
    212,324.13x = 318,486.22 × 54,552.58
  4. Step 4: Simplify right side
    212,324.13x = 17,374,244,062.85
  5. Step 5: Solve for x
    x = 17,374,244,062.85/212,324.13
  6. Step 6: Final answer
    x = 81,828.87

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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.