Home / 287,266.10-396,443.57-172,579.82

Finding the Fourth Proportional to 287,266.10, 396,443.57 and 172,579.82

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Solution

The fourth proportional to 287,266.10, 396,443.57 and 172,579.82 is: 238,169.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,266.10 : 396,443.57 = 172,579.82 : x
  2. Step 2: Convert to fraction form
    287,266.10/396,443.57 = 172,579.82/x
  3. Step 3: Cross multiply
    287,266.10x = 396,443.57 × 172,579.82
  4. Step 4: Simplify right side
    287,266.10x = 68,418,157,105.64
  5. Step 5: Solve for x
    x = 68,418,157,105.64/287,266.10
  6. Step 6: Final answer
    x = 238,169.97

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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.