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Finding the Fourth Proportional to 463,143.88, 639,138.55 and 251,175.88

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Solution

The fourth proportional to 463,143.88, 639,138.55 and 251,175.88 is: 346,622.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,143.88 : 639,138.55 = 251,175.88 : x
  2. Step 2: Convert to fraction form
    463,143.88/639,138.55 = 251,175.88/x
  3. Step 3: Cross multiply
    463,143.88x = 639,138.55 × 251,175.88
  4. Step 4: Simplify right side
    463,143.88x = 160,536,184,542.48
  5. Step 5: Solve for x
    x = 160,536,184,542.48/463,143.88
  6. Step 6: Final answer
    x = 346,622.71

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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.