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Finding the Fourth Proportional to 245,187, 338,355.72 and 136,288.48

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Solution

The fourth proportional to 245,187, 338,355.72 and 136,288.48 is: 188,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,187 : 338,355.72 = 136,288.48 : x
  2. Step 2: Convert to fraction form
    245,187/338,355.72 = 136,288.48/x
  3. Step 3: Cross multiply
    245,187x = 338,355.72 × 136,288.48
  4. Step 4: Simplify right side
    245,187x = 46,113,986,778.11
  5. Step 5: Solve for x
    x = 46,113,986,778.11/245,187
  6. Step 6: Final answer
    x = 188,076.80

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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.