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Finding the Fourth Proportional to 245,694.71, 339,057.62 and 138,266.54

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Solution

The fourth proportional to 245,694.71, 339,057.62 and 138,266.54 is: 190,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,694.71 : 339,057.62 = 138,266.54 : x
  2. Step 2: Convert to fraction form
    245,694.71/339,057.62 = 138,266.54/x
  3. Step 3: Cross multiply
    245,694.71x = 339,057.62 × 138,266.54
  4. Step 4: Simplify right side
    245,694.71x = 46,880,321,591.41
  5. Step 5: Solve for x
    x = 46,880,321,591.41/245,694.71
  6. Step 6: Final answer
    x = 190,807.21

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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.