Home / 381,187.45-525,984.30-228,189.05

Finding the Fourth Proportional to 381,187.45, 525,984.30 and 228,189.05

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Solution

The fourth proportional to 381,187.45, 525,984.30 and 228,189.05 is: 314,868.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,187.45 : 525,984.30 = 228,189.05 : x
  2. Step 2: Convert to fraction form
    381,187.45/525,984.30 = 228,189.05/x
  3. Step 3: Cross multiply
    381,187.45x = 525,984.30 × 228,189.05
  4. Step 4: Simplify right side
    381,187.45x = 120,023,857,074.44
  5. Step 5: Solve for x
    x = 120,023,857,074.44/381,187.45
  6. Step 6: Final answer
    x = 314,868.33

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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.