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Finding the Fourth Proportional to 245,809.67, 339,193.09 and 136,910.36

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Solution

The fourth proportional to 245,809.67, 339,193.09 and 136,910.36 is: 188,922.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,809.67 : 339,193.09 = 136,910.36 : x
  2. Step 2: Convert to fraction form
    245,809.67/339,193.09 = 136,910.36/x
  3. Step 3: Cross multiply
    245,809.67x = 339,193.09 × 136,910.36
  4. Step 4: Simplify right side
    245,809.67x = 46,439,046,793.29
  5. Step 5: Solve for x
    x = 46,439,046,793.29/245,809.67
  6. Step 6: Final answer
    x = 188,922.78

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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.