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Finding the Fourth Proportional to 245,546.14, 338,851.22 and 136,648.64

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Solution

The fourth proportional to 245,546.14, 338,851.22 and 136,648.64 is: 188,573.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,546.14 : 338,851.22 = 136,648.64 : x
  2. Step 2: Convert to fraction form
    245,546.14/338,851.22 = 136,648.64/x
  3. Step 3: Cross multiply
    245,546.14x = 338,851.22 × 136,648.64
  4. Step 4: Simplify right side
    245,546.14x = 46,303,558,375.34
  5. Step 5: Solve for x
    x = 46,303,558,375.34/245,546.14
  6. Step 6: Final answer
    x = 188,573.76

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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.