Home / 315,789.21-435,783.97-172,546.18

Finding the Fourth Proportional to 315,789.21, 435,783.97 and 172,546.18

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Solution

The fourth proportional to 315,789.21, 435,783.97 and 172,546.18 is: 238,110.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,789.21 : 435,783.97 = 172,546.18 : x
  2. Step 2: Convert to fraction form
    315,789.21/435,783.97 = 172,546.18/x
  3. Step 3: Cross multiply
    315,789.21x = 435,783.97 × 172,546.18
  4. Step 4: Simplify right side
    315,789.21x = 75,192,859,328.73
  5. Step 5: Solve for x
    x = 75,192,859,328.73/315,789.21
  6. Step 6: Final answer
    x = 238,110.92

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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.