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Finding the Fourth Proportional to 239,081.54, 329,821.70 and 154,225.94

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Solution

The fourth proportional to 239,081.54, 329,821.70 and 154,225.94 is: 212,760.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,081.54 : 329,821.70 = 154,225.94 : x
  2. Step 2: Convert to fraction form
    239,081.54/329,821.70 = 154,225.94/x
  3. Step 3: Cross multiply
    239,081.54x = 329,821.70 × 154,225.94
  4. Step 4: Simplify right side
    239,081.54x = 50,867,061,714.90
  5. Step 5: Solve for x
    x = 50,867,061,714.90/239,081.54
  6. Step 6: Final answer
    x = 212,760.31

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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.