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Finding the Fourth Proportional to 245,499.44, 338,785.96 and 138,069.47

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Solution

The fourth proportional to 245,499.44, 338,785.96 and 138,069.47 is: 190,534.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,499.44 : 338,785.96 = 138,069.47 : x
  2. Step 2: Convert to fraction form
    245,499.44/338,785.96 = 138,069.47/x
  3. Step 3: Cross multiply
    245,499.44x = 338,785.96 × 138,069.47
  4. Step 4: Simplify right side
    245,499.44x = 46,775,995,901.54
  5. Step 5: Solve for x
    x = 46,775,995,901.54/245,499.44
  6. Step 6: Final answer
    x = 190,534.03

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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.