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Finding the Fourth Proportional to 245,625.75, 338,961.14 and 136,728.36

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Solution

The fourth proportional to 245,625.75, 338,961.14 and 136,728.36 is: 188,683.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,625.75 : 338,961.14 = 136,728.36 : x
  2. Step 2: Convert to fraction form
    245,625.75/338,961.14 = 136,728.36/x
  3. Step 3: Cross multiply
    245,625.75x = 338,961.14 × 136,728.36
  4. Step 4: Simplify right side
    245,625.75x = 46,345,600,775.93
  5. Step 5: Solve for x
    x = 46,345,600,775.93/245,625.75
  6. Step 6: Final answer
    x = 188,683.80

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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.