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Finding the Fourth Proportional to 245,796.80, 339,205.95 and 138,370.73

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Solution

The fourth proportional to 245,796.80, 339,205.95 and 138,370.73 is: 190,955.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,796.80 : 339,205.95 = 138,370.73 : x
  2. Step 2: Convert to fraction form
    245,796.80/339,205.95 = 138,370.73/x
  3. Step 3: Cross multiply
    245,796.80x = 339,205.95 × 138,370.73
  4. Step 4: Simplify right side
    245,796.80x = 46,936,173,225.81
  5. Step 5: Solve for x
    x = 46,936,173,225.81/245,796.80
  6. Step 6: Final answer
    x = 190,955.19

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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.