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Finding the Fourth Proportional to 455,956.40, 629,200.28 and 251,996.80

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Solution

The fourth proportional to 455,956.40, 629,200.28 and 251,996.80 is: 347,744.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,956.40 : 629,200.28 = 251,996.80 : x
  2. Step 2: Convert to fraction form
    455,956.40/629,200.28 = 251,996.80/x
  3. Step 3: Cross multiply
    455,956.40x = 629,200.28 × 251,996.80
  4. Step 4: Simplify right side
    455,956.40x = 158,556,457,119.10
  5. Step 5: Solve for x
    x = 158,556,457,119.10/455,956.40
  6. Step 6: Final answer
    x = 347,744.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.