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Finding the Fourth Proportional to 439,819.80, 659,729.70 and 299,851.80

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Solution

The fourth proportional to 439,819.80, 659,729.70 and 299,851.80 is: 449,777.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,819.80 : 659,729.70 = 299,851.80 : x
  2. Step 2: Convert to fraction form
    439,819.80/659,729.70 = 299,851.80/x
  3. Step 3: Cross multiply
    439,819.80x = 659,729.70 × 299,851.80
  4. Step 4: Simplify right side
    439,819.80x = 197,821,138,058.46
  5. Step 5: Solve for x
    x = 197,821,138,058.46/439,819.80
  6. Step 6: Final answer
    x = 449,777.70

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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.