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Finding the Fourth Proportional to 455,892.26, 629,143.89 and 251,956.40

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Solution

The fourth proportional to 455,892.26, 629,143.89 and 251,956.40 is: 347,706.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,892.26 : 629,143.89 = 251,956.40 : x
  2. Step 2: Convert to fraction form
    455,892.26/629,143.89 = 251,956.40/x
  3. Step 3: Cross multiply
    455,892.26x = 629,143.89 × 251,956.40
  4. Step 4: Simplify right side
    455,892.26x = 158,516,829,606.40
  5. Step 5: Solve for x
    x = 158,516,829,606.40/455,892.26
  6. Step 6: Final answer
    x = 347,706.78

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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.