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Finding the Fourth Proportional to 379,215.52, 568,916.86 and 112,975

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Solution

The fourth proportional to 379,215.52, 568,916.86 and 112,975 is: 169,490.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,215.52 : 568,916.86 = 112,975 : x
  2. Step 2: Convert to fraction form
    379,215.52/568,916.86 = 112,975/x
  3. Step 3: Cross multiply
    379,215.52x = 568,916.86 × 112,975
  4. Step 4: Simplify right side
    379,215.52x = 64,273,382,258.50
  5. Step 5: Solve for x
    x = 64,273,382,258.50/379,215.52
  6. Step 6: Final answer
    x = 169,490.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.