Home / 310,074.22-427,969.07-189,189.55

Finding the Fourth Proportional to 310,074.22, 427,969.07 and 189,189.55

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Solution

The fourth proportional to 310,074.22, 427,969.07 and 189,189.55 is: 261,122.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,074.22 : 427,969.07 = 189,189.55 : x
  2. Step 2: Convert to fraction form
    310,074.22/427,969.07 = 189,189.55/x
  3. Step 3: Cross multiply
    310,074.22x = 427,969.07 × 189,189.55
  4. Step 4: Simplify right side
    310,074.22x = 80,967,275,767.22
  5. Step 5: Solve for x
    x = 80,967,275,767.22/310,074.22
  6. Step 6: Final answer
    x = 261,122.24

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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.