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Finding the Fourth Proportional to 245,804.43, 339,197.19 and 138,370.89

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Solution

The fourth proportional to 245,804.43, 339,197.19 and 138,370.89 is: 190,944.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,804.43 : 339,197.19 = 138,370.89 : x
  2. Step 2: Convert to fraction form
    245,804.43/339,197.19 = 138,370.89/x
  3. Step 3: Cross multiply
    245,804.43x = 339,197.19 × 138,370.89
  4. Step 4: Simplify right side
    245,804.43x = 46,935,017,065.80
  5. Step 5: Solve for x
    x = 46,935,017,065.80/245,804.43
  6. Step 6: Final answer
    x = 190,944.55

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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.