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Finding the Fourth Proportional to 245,696.64, 339,057.44 and 138,266.64

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Solution

The fourth proportional to 245,696.64, 339,057.44 and 138,266.64 is: 190,805.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,696.64 : 339,057.44 = 138,266.64 : x
  2. Step 2: Convert to fraction form
    245,696.64/339,057.44 = 138,266.64/x
  3. Step 3: Cross multiply
    245,696.64x = 339,057.44 × 138,266.64
  4. Step 4: Simplify right side
    245,696.64x = 46,880,332,995.80
  5. Step 5: Solve for x
    x = 46,880,332,995.80/245,696.64
  6. Step 6: Final answer
    x = 190,805.76

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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.