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Finding the Fourth Proportional to 274,576.50, 378,803.52 and 172,569.06

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Solution

The fourth proportional to 274,576.50, 378,803.52 and 172,569.06 is: 238,074.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,576.50 : 378,803.52 = 172,569.06 : x
  2. Step 2: Convert to fraction form
    274,576.50/378,803.52 = 172,569.06/x
  3. Step 3: Cross multiply
    274,576.50x = 378,803.52 × 172,569.06
  4. Step 4: Simplify right side
    274,576.50x = 65,369,767,371.09
  5. Step 5: Solve for x
    x = 65,369,767,371.09/274,576.50
  6. Step 6: Final answer
    x = 238,074.88

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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.