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Finding the Fourth Proportional to 455,229.50, 628,216.83 and 251,280.51

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Solution

The fourth proportional to 455,229.50, 628,216.83 and 251,280.51 is: 346,767.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,229.50 : 628,216.83 = 251,280.51 : x
  2. Step 2: Convert to fraction form
    455,229.50/628,216.83 = 251,280.51/x
  3. Step 3: Cross multiply
    455,229.50x = 628,216.83 × 251,280.51
  4. Step 4: Simplify right side
    455,229.50x = 157,858,645,432.98
  5. Step 5: Solve for x
    x = 157,858,645,432.98/455,229.50
  6. Step 6: Final answer
    x = 346,767.17

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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.