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Finding the Fourth Proportional to 287,324.72, 396,318.12 and 179,707.92

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Solution

The fourth proportional to 287,324.72, 396,318.12 and 179,707.92 is: 247,878.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,324.72 : 396,318.12 = 179,707.92 : x
  2. Step 2: Convert to fraction form
    287,324.72/396,318.12 = 179,707.92/x
  3. Step 3: Cross multiply
    287,324.72x = 396,318.12 × 179,707.92
  4. Step 4: Simplify right side
    287,324.72x = 71,221,502,843.41
  5. Step 5: Solve for x
    x = 71,221,502,843.41/287,324.72
  6. Step 6: Final answer
    x = 247,878.09

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1.5x scale

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.