Home / 338,716.12-508,074.40-86,015.56

Finding the Fourth Proportional to 338,716.12, 508,074.40 and 86,015.56

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Solution

The fourth proportional to 338,716.12, 508,074.40 and 86,015.56 is: 129,023.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,716.12 : 508,074.40 = 86,015.56 : x
  2. Step 2: Convert to fraction form
    338,716.12/508,074.40 = 86,015.56/x
  3. Step 3: Cross multiply
    338,716.12x = 508,074.40 × 86,015.56
  4. Step 4: Simplify right side
    338,716.12x = 43,702,301,497.29
  5. Step 5: Solve for x
    x = 43,702,301,497.29/338,716.12
  6. Step 6: Final answer
    x = 129,023.39

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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.