Home / 300,961.17-415,334.12-170,128.28

Finding the Fourth Proportional to 300,961.17, 415,334.12 and 170,128.28

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Solution

The fourth proportional to 300,961.17, 415,334.12 and 170,128.28 is: 234,781.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,961.17 : 415,334.12 = 170,128.28 : x
  2. Step 2: Convert to fraction form
    300,961.17/415,334.12 = 170,128.28/x
  3. Step 3: Cross multiply
    300,961.17x = 415,334.12 × 170,128.28
  4. Step 4: Simplify right side
    300,961.17x = 70,660,079,648.61
  5. Step 5: Solve for x
    x = 70,660,079,648.61/300,961.17
  6. Step 6: Final answer
    x = 234,781.38

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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.