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Finding the Fourth Proportional to 455,509.11, 628,591.82 and 251,555.97

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Solution

The fourth proportional to 455,509.11, 628,591.82 and 251,555.97 is: 347,141.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,509.11 : 628,591.82 = 251,555.97 : x
  2. Step 2: Convert to fraction form
    455,509.11/628,591.82 = 251,555.97/x
  3. Step 3: Cross multiply
    455,509.11x = 628,591.82 × 251,555.97
  4. Step 4: Simplify right side
    455,509.11x = 158,126,023,756.39
  5. Step 5: Solve for x
    x = 158,126,023,756.39/455,509.11
  6. Step 6: Final answer
    x = 347,141.30

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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.