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Finding the Fourth Proportional to 258,149.72, 355,959.42 and 176,491.28

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Solution

The fourth proportional to 258,149.72, 355,959.42 and 176,491.28 is: 243,361.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,149.72 : 355,959.42 = 176,491.28 : x
  2. Step 2: Convert to fraction form
    258,149.72/355,959.42 = 176,491.28/x
  3. Step 3: Cross multiply
    258,149.72x = 355,959.42 × 176,491.28
  4. Step 4: Simplify right side
    258,149.72x = 62,823,734,131.73
  5. Step 5: Solve for x
    x = 62,823,734,131.73/258,149.72
  6. Step 6: Final answer
    x = 243,361.62

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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.