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Finding the Fourth Proportional to 423,530.98, 635,391.24 and 143,040.94

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Solution

The fourth proportional to 423,530.98, 635,391.24 and 143,040.94 is: 214,593.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,530.98 : 635,391.24 = 143,040.94 : x
  2. Step 2: Convert to fraction form
    423,530.98/635,391.24 = 143,040.94/x
  3. Step 3: Cross multiply
    423,530.98x = 635,391.24 × 143,040.94
  4. Step 4: Simplify right side
    423,530.98x = 90,886,958,112.48
  5. Step 5: Solve for x
    x = 90,886,958,112.48/423,530.98
  6. Step 6: Final answer
    x = 214,593.41

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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.