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Finding the Fourth Proportional to 245,099.78, 338,217.45 and 136,207.32

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Solution

The fourth proportional to 245,099.78, 338,217.45 and 136,207.32 is: 187,954.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,099.78 : 338,217.45 = 136,207.32 : x
  2. Step 2: Convert to fraction form
    245,099.78/338,217.45 = 136,207.32/x
  3. Step 3: Cross multiply
    245,099.78x = 338,217.45 × 136,207.32
  4. Step 4: Simplify right side
    245,099.78x = 46,067,692,441.73
  5. Step 5: Solve for x
    x = 46,067,692,441.73/245,099.78
  6. Step 6: Final answer
    x = 187,954.85

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1.5x scale

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.