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Finding the Fourth Proportional to 234,591.31, 324,005.05 and 154,376.93

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Solution

The fourth proportional to 234,591.31, 324,005.05 and 154,376.93 is: 213,217.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,591.31 : 324,005.05 = 154,376.93 : x
  2. Step 2: Convert to fraction form
    234,591.31/324,005.05 = 154,376.93/x
  3. Step 3: Cross multiply
    234,591.31x = 324,005.05 × 154,376.93
  4. Step 4: Simplify right side
    234,591.31x = 50,018,904,923.50
  5. Step 5: Solve for x
    x = 50,018,904,923.50/234,591.31
  6. Step 6: Final answer
    x = 213,217.21

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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.