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Finding the Fourth Proportional to 423,393.48, 635,090.22 and 143,107.56

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Solution

The fourth proportional to 423,393.48, 635,090.22 and 143,107.56 is: 214,661.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,393.48 : 635,090.22 = 143,107.56 : x
  2. Step 2: Convert to fraction form
    423,393.48/635,090.22 = 143,107.56/x
  3. Step 3: Cross multiply
    423,393.48x = 635,090.22 × 143,107.56
  4. Step 4: Simplify right side
    423,393.48x = 90,886,211,764.06
  5. Step 5: Solve for x
    x = 90,886,211,764.06/423,393.48
  6. Step 6: Final answer
    x = 214,661.34

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.