Home / 245,610.54-338,915.07-138,217.50

Finding the Fourth Proportional to 245,610.54, 338,915.07 and 138,217.50

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Solution

The fourth proportional to 245,610.54, 338,915.07 and 138,217.50 is: 190,724.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,610.54 : 338,915.07 = 138,217.50 : x
  2. Step 2: Convert to fraction form
    245,610.54/338,915.07 = 138,217.50/x
  3. Step 3: Cross multiply
    245,610.54x = 338,915.07 × 138,217.50
  4. Step 4: Simplify right side
    245,610.54x = 46,843,993,687.73
  5. Step 5: Solve for x
    x = 46,843,993,687.73/245,610.54
  6. Step 6: Final answer
    x = 190,724.69

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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.