Home / 245,715.58-339,087.19-138,286.38

Finding the Fourth Proportional to 245,715.58, 339,087.19 and 138,286.38

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Solution

The fourth proportional to 245,715.58, 339,087.19 and 138,286.38 is: 190,835.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,715.58 : 339,087.19 = 138,286.38 : x
  2. Step 2: Convert to fraction form
    245,715.58/339,087.19 = 138,286.38/x
  3. Step 3: Cross multiply
    245,715.58x = 339,087.19 × 138,286.38
  4. Step 4: Simplify right side
    245,715.58x = 46,891,140,009.47
  5. Step 5: Solve for x
    x = 46,891,140,009.47/245,715.58
  6. Step 6: Final answer
    x = 190,835.03

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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.