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Finding the Fourth Proportional to 234,647.62, 323,728.86 and 154,118.80

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Solution

The fourth proportional to 234,647.62, 323,728.86 and 154,118.80 is: 212,628.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,647.62 : 323,728.86 = 154,118.80 : x
  2. Step 2: Convert to fraction form
    234,647.62/323,728.86 = 154,118.80/x
  3. Step 3: Cross multiply
    234,647.62x = 323,728.86 × 154,118.80
  4. Step 4: Simplify right side
    234,647.62x = 49,892,703,428.57
  5. Step 5: Solve for x
    x = 49,892,703,428.57/234,647.62
  6. Step 6: Final answer
    x = 212,628.21

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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.