Home / 315,147.38-472,725.18-104,785.31

Finding the Fourth Proportional to 315,147.38, 472,725.18 and 104,785.31

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Solution

The fourth proportional to 315,147.38, 472,725.18 and 104,785.31 is: 157,179.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,147.38 : 472,725.18 = 104,785.31 : x
  2. Step 2: Convert to fraction form
    315,147.38/472,725.18 = 104,785.31/x
  3. Step 3: Cross multiply
    315,147.38x = 472,725.18 × 104,785.31
  4. Step 4: Simplify right side
    315,147.38x = 49,534,655,712.92
  5. Step 5: Solve for x
    x = 49,534,655,712.92/315,147.38
  6. Step 6: Final answer
    x = 157,179.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.