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Finding the Fourth Proportional to 245,756.79, 339,144.27 and 138,327.39

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Solution

The fourth proportional to 245,756.79, 339,144.27 and 138,327.39 is: 190,891.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,756.79 : 339,144.27 = 138,327.39 : x
  2. Step 2: Convert to fraction form
    245,756.79/339,144.27 = 138,327.39/x
  3. Step 3: Cross multiply
    245,756.79x = 339,144.27 × 138,327.39
  4. Step 4: Simplify right side
    245,756.79x = 46,912,941,702.56
  5. Step 5: Solve for x
    x = 46,912,941,702.56/245,756.79
  6. Step 6: Final answer
    x = 190,891.74

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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.