Home / 312,634.20-431,443.23-191,842.25

Finding the Fourth Proportional to 312,634.20, 431,443.23 and 191,842.25

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Solution

The fourth proportional to 312,634.20, 431,443.23 and 191,842.25 is: 264,747.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,634.20 : 431,443.23 = 191,842.25 : x
  2. Step 2: Convert to fraction form
    312,634.20/431,443.23 = 191,842.25/x
  3. Step 3: Cross multiply
    312,634.20x = 431,443.23 × 191,842.25
  4. Step 4: Simplify right side
    312,634.20x = 82,769,037,113.84
  5. Step 5: Solve for x
    x = 82,769,037,113.84/312,634.20
  6. Step 6: Final answer
    x = 264,747.22

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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.