Home / 389,190.80-583,786.20-256,221.20

Finding the Fourth Proportional to 389,190.80, 583,786.20 and 256,221.20

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Solution

The fourth proportional to 389,190.80, 583,786.20 and 256,221.20 is: 384,331.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,190.80 : 583,786.20 = 256,221.20 : x
  2. Step 2: Convert to fraction form
    389,190.80/583,786.20 = 256,221.20/x
  3. Step 3: Cross multiply
    389,190.80x = 583,786.20 × 256,221.20
  4. Step 4: Simplify right side
    389,190.80x = 149,578,400,707.44
  5. Step 5: Solve for x
    x = 149,578,400,707.44/389,190.80
  6. Step 6: Final answer
    x = 384,331.80

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1.5x scale

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.