Home / 318,236.12-439,135.80-189,164.24

Finding the Fourth Proportional to 318,236.12, 439,135.80 and 189,164.24

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Solution

The fourth proportional to 318,236.12, 439,135.80 and 189,164.24 is: 261,028.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,236.12 : 439,135.80 = 189,164.24 : x
  2. Step 2: Convert to fraction form
    318,236.12/439,135.80 = 189,164.24/x
  3. Step 3: Cross multiply
    318,236.12x = 439,135.80 × 189,164.24
  4. Step 4: Simplify right side
    318,236.12x = 83,068,789,863.79
  5. Step 5: Solve for x
    x = 83,068,789,863.79/318,236.12
  6. Step 6: Final answer
    x = 261,028.79

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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.