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Finding the Fourth Proportional to 423,558.36, 635,454.18 and 143,272.44

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Solution

The fourth proportional to 423,558.36, 635,454.18 and 143,272.44 is: 214,948.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,558.36 : 635,454.18 = 143,272.44 : x
  2. Step 2: Convert to fraction form
    423,558.36/635,454.18 = 143,272.44/x
  3. Step 3: Cross multiply
    423,558.36x = 635,454.18 × 143,272.44
  4. Step 4: Simplify right side
    423,558.36x = 91,043,070,876.80
  5. Step 5: Solve for x
    x = 91,043,070,876.80/423,558.36
  6. Step 6: Final answer
    x = 214,948.11

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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.