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Finding the Fourth Proportional to 423,625.68, 635,533.02 and 143,135.64

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Solution

The fourth proportional to 423,625.68, 635,533.02 and 143,135.64 is: 214,735.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,625.68 : 635,533.02 = 143,135.64 : x
  2. Step 2: Convert to fraction form
    423,625.68/635,533.02 = 143,135.64/x
  3. Step 3: Cross multiply
    423,625.68x = 635,533.02 × 143,135.64
  4. Step 4: Simplify right side
    423,625.68x = 90,967,425,558.83
  5. Step 5: Solve for x
    x = 90,967,425,558.83/423,625.68
  6. Step 6: Final answer
    x = 214,735.39

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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.