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Finding the Fourth Proportional to 245,199.74, 338,375.92 and 137,769.72

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Solution

The fourth proportional to 245,199.74, 338,375.92 and 137,769.72 is: 190,122.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,199.74 : 338,375.92 = 137,769.72 : x
  2. Step 2: Convert to fraction form
    245,199.74/338,375.92 = 137,769.72/x
  3. Step 3: Cross multiply
    245,199.74x = 338,375.92 × 137,769.72
  4. Step 4: Simplify right side
    245,199.74x = 46,617,955,753.14
  5. Step 5: Solve for x
    x = 46,617,955,753.14/245,199.74
  6. Step 6: Final answer
    x = 190,122.37

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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.