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Finding the Fourth Proportional to 245,375.87, 338,609.97 and 136,479.60

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Solution

The fourth proportional to 245,375.87, 338,609.97 and 136,479.60 is: 188,337.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,375.87 : 338,609.97 = 136,479.60 : x
  2. Step 2: Convert to fraction form
    245,375.87/338,609.97 = 136,479.60/x
  3. Step 3: Cross multiply
    245,375.87x = 338,609.97 × 136,479.60
  4. Step 4: Simplify right side
    245,375.87x = 46,213,353,261.61
  5. Step 5: Solve for x
    x = 46,213,353,261.61/245,375.87
  6. Step 6: Final answer
    x = 188,337.00

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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.