Home / 286,939.23-395,979.15-157,879.38

Finding the Fourth Proportional to 286,939.23, 395,979.15 and 157,879.38

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Solution

The fourth proportional to 286,939.23, 395,979.15 and 157,879.38 is: 217,875.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,939.23 : 395,979.15 = 157,879.38 : x
  2. Step 2: Convert to fraction form
    286,939.23/395,979.15 = 157,879.38/x
  3. Step 3: Cross multiply
    286,939.23x = 395,979.15 × 157,879.38
  4. Step 4: Simplify right side
    286,939.23x = 62,516,942,694.93
  5. Step 5: Solve for x
    x = 62,516,942,694.93/286,939.23
  6. Step 6: Final answer
    x = 217,875.20

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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.