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Finding the Fourth Proportional to 245,591.34, 338,912.67 and 138,161.34

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Solution

The fourth proportional to 245,591.34, 338,912.67 and 138,161.34 is: 190,660.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,591.34 : 338,912.67 = 138,161.34 : x
  2. Step 2: Convert to fraction form
    245,591.34/338,912.67 = 138,161.34/x
  3. Step 3: Cross multiply
    245,591.34x = 338,912.67 × 138,161.34
  4. Step 4: Simplify right side
    245,591.34x = 46,824,628,630.18
  5. Step 5: Solve for x
    x = 46,824,628,630.18/245,591.34
  6. Step 6: Final answer
    x = 190,660.75

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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.