Home / 287,091.36-396,226.80-172,375.20

Finding the Fourth Proportional to 287,091.36, 396,226.80 and 172,375.20

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Solution

The fourth proportional to 287,091.36, 396,226.80 and 172,375.20 is: 237,902.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,091.36 : 396,226.80 = 172,375.20 : x
  2. Step 2: Convert to fraction form
    287,091.36/396,226.80 = 172,375.20/x
  3. Step 3: Cross multiply
    287,091.36x = 396,226.80 × 172,375.20
  4. Step 4: Simplify right side
    287,091.36x = 68,299,673,895.36
  5. Step 5: Solve for x
    x = 68,299,673,895.36/287,091.36
  6. Step 6: Final answer
    x = 237,902.23

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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.