Home / 220,109.05-303,206.38-187,738.21

Finding the Fourth Proportional to 220,109.05, 303,206.38 and 187,738.21

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Solution

The fourth proportional to 220,109.05, 303,206.38 and 187,738.21 is: 258,614.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,109.05 : 303,206.38 = 187,738.21 : x
  2. Step 2: Convert to fraction form
    220,109.05/303,206.38 = 187,738.21/x
  3. Step 3: Cross multiply
    220,109.05x = 303,206.38 × 187,738.21
  4. Step 4: Simplify right side
    220,109.05x = 56,923,423,041.78
  5. Step 5: Solve for x
    x = 56,923,423,041.78/220,109.05
  6. Step 6: Final answer
    x = 258,614.64

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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.