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Finding the Fourth Proportional to 228,860.45, 315,826.86 and 126,883.30

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Solution

The fourth proportional to 228,860.45, 315,826.86 and 126,883.30 is: 175,098.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,860.45 : 315,826.86 = 126,883.30 : x
  2. Step 2: Convert to fraction form
    228,860.45/315,826.86 = 126,883.30/x
  3. Step 3: Cross multiply
    228,860.45x = 315,826.86 × 126,883.30
  4. Step 4: Simplify right side
    228,860.45x = 40,073,153,524.44
  5. Step 5: Solve for x
    x = 40,073,153,524.44/228,860.45
  6. Step 6: Final answer
    x = 175,098.64

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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.