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Finding the Fourth Proportional to 455,344.62, 628,363.07 and 251,391.83

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Solution

The fourth proportional to 455,344.62, 628,363.07 and 251,391.83 is: 346,913.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,344.62 : 628,363.07 = 251,391.83 : x
  2. Step 2: Convert to fraction form
    455,344.62/628,363.07 = 251,391.83/x
  3. Step 3: Cross multiply
    455,344.62x = 628,363.07 × 251,391.83
  4. Step 4: Simplify right side
    455,344.62x = 157,965,337,672.94
  5. Step 5: Solve for x
    x = 157,965,337,672.94/455,344.62
  6. Step 6: Final answer
    x = 346,913.81

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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.