Home / 287,556.61-396,857.65-172,872.38

Finding the Fourth Proportional to 287,556.61, 396,857.65 and 172,872.38

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Solution

The fourth proportional to 287,556.61, 396,857.65 and 172,872.38 is: 238,581.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,556.61 : 396,857.65 = 172,872.38 : x
  2. Step 2: Convert to fraction form
    287,556.61/396,857.65 = 172,872.38/x
  3. Step 3: Cross multiply
    287,556.61x = 396,857.65 × 172,872.38
  4. Step 4: Simplify right side
    287,556.61x = 68,605,726,476.71
  5. Step 5: Solve for x
    x = 68,605,726,476.71/287,556.61
  6. Step 6: Final answer
    x = 238,581.64

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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.