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Finding the Fourth Proportional to 439,078.76, 605,882.31 and 248,055.26

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Solution

The fourth proportional to 439,078.76, 605,882.31 and 248,055.26 is: 342,290.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,078.76 : 605,882.31 = 248,055.26 : x
  2. Step 2: Convert to fraction form
    439,078.76/605,882.31 = 248,055.26/x
  3. Step 3: Cross multiply
    439,078.76x = 605,882.31 × 248,055.26
  4. Step 4: Simplify right side
    439,078.76x = 150,292,293,936.45
  5. Step 5: Solve for x
    x = 150,292,293,936.45/439,078.76
  6. Step 6: Final answer
    x = 342,290.06

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Double scale
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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.