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Finding the Fourth Proportional to 423,554.88, 635,427.36 and 143,064.96

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Solution

The fourth proportional to 423,554.88, 635,427.36 and 143,064.96 is: 214,629.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,554.88 : 635,427.36 = 143,064.96 : x
  2. Step 2: Convert to fraction form
    423,554.88/635,427.36 = 143,064.96/x
  3. Step 3: Cross multiply
    423,554.88x = 635,427.36 × 143,064.96
  4. Step 4: Simplify right side
    423,554.88x = 90,907,389,841.31
  5. Step 5: Solve for x
    x = 90,907,389,841.31/423,554.88
  6. Step 6: Final answer
    x = 214,629.54

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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.