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Finding the Fourth Proportional to 438,704.80, 658,748.40 and 252,080.80

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Solution

The fourth proportional to 438,704.80, 658,748.40 and 252,080.80 is: 378,518.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,704.80 : 658,748.40 = 252,080.80 : x
  2. Step 2: Convert to fraction form
    438,704.80/658,748.40 = 252,080.80/x
  3. Step 3: Cross multiply
    438,704.80x = 658,748.40 × 252,080.80
  4. Step 4: Simplify right side
    438,704.80x = 166,057,823,670.72
  5. Step 5: Solve for x
    x = 166,057,823,670.72/438,704.80
  6. Step 6: Final answer
    x = 378,518.37

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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.