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Finding the Fourth Proportional to 234,981, 324,273.78 and 134,379

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Solution

The fourth proportional to 234,981, 324,273.78 and 134,379 is: 185,443.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,981 : 324,273.78 = 134,379 : x
  2. Step 2: Convert to fraction form
    234,981/324,273.78 = 134,379/x
  3. Step 3: Cross multiply
    234,981x = 324,273.78 × 134,379
  4. Step 4: Simplify right side
    234,981x = 43,575,586,282.62
  5. Step 5: Solve for x
    x = 43,575,586,282.62/234,981
  6. Step 6: Final answer
    x = 185,443.02

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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.