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Finding the Fourth Proportional to 245,309.58, 338,530.23 and 148,512.12

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Solution

The fourth proportional to 245,309.58, 338,530.23 and 148,512.12 is: 204,948.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,309.58 : 338,530.23 = 148,512.12 : x
  2. Step 2: Convert to fraction form
    245,309.58/338,530.23 = 148,512.12/x
  3. Step 3: Cross multiply
    245,309.58x = 338,530.23 × 148,512.12
  4. Step 4: Simplify right side
    245,309.58x = 50,275,842,141.39
  5. Step 5: Solve for x
    x = 50,275,842,141.39/245,309.58
  6. Step 6: Final answer
    x = 204,948.55

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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.