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Finding the Fourth Proportional to 245,556, 368,391.15 and 77,067.09

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Solution

The fourth proportional to 245,556, 368,391.15 and 77,067.09 is: 115,618.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,556 : 368,391.15 = 77,067.09 : x
  2. Step 2: Convert to fraction form
    245,556/368,391.15 = 77,067.09/x
  3. Step 3: Cross multiply
    245,556x = 368,391.15 × 77,067.09
  4. Step 4: Simplify right side
    245,556x = 28,390,833,912.25
  5. Step 5: Solve for x
    x = 28,390,833,912.25/245,556
  6. Step 6: Final answer
    x = 115,618.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.