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Finding the Fourth Proportional to 275,855.20, 413,987.60 and 109,762.40

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Solution

The fourth proportional to 275,855.20, 413,987.60 and 109,762.40 is: 164,725.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,855.20 : 413,987.60 = 109,762.40 : x
  2. Step 2: Convert to fraction form
    275,855.20/413,987.60 = 109,762.40/x
  3. Step 3: Cross multiply
    275,855.20x = 413,987.60 × 109,762.40
  4. Step 4: Simplify right side
    275,855.20x = 45,440,272,546.24
  5. Step 5: Solve for x
    x = 45,440,272,546.24/275,855.20
  6. Step 6: Final answer
    x = 164,725.09

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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.