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Finding the Fourth Proportional to 245,806.52, 339,245.33 and 138,397.49

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Solution

The fourth proportional to 245,806.52, 339,245.33 and 138,397.49 is: 191,006.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,806.52 : 339,245.33 = 138,397.49 : x
  2. Step 2: Convert to fraction form
    245,806.52/339,245.33 = 138,397.49/x
  3. Step 3: Cross multiply
    245,806.52x = 339,245.33 × 138,397.49
  4. Step 4: Simplify right side
    245,806.52x = 46,950,700,470.00
  5. Step 5: Solve for x
    x = 46,950,700,470.00/245,806.52
  6. Step 6: Final answer
    x = 191,006.73

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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.