Home / 245,451.11-338,724.56-138,020.21

Finding the Fourth Proportional to 245,451.11, 338,724.56 and 138,020.21

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Solution

The fourth proportional to 245,451.11, 338,724.56 and 138,020.21 is: 190,469.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,451.11 : 338,724.56 = 138,020.21 : x
  2. Step 2: Convert to fraction form
    245,451.11/338,724.56 = 138,020.21/x
  3. Step 3: Cross multiply
    245,451.11x = 338,724.56 × 138,020.21
  4. Step 4: Simplify right side
    245,451.11x = 46,750,834,903.36
  5. Step 5: Solve for x
    x = 46,750,834,903.36/245,451.11
  6. Step 6: Final answer
    x = 190,469.03

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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.