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Finding the Fourth Proportional to 455,506.69, 628,600.30 and 251,553.90

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Solution

The fourth proportional to 455,506.69, 628,600.30 and 251,553.90 is: 347,144.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,506.69 : 628,600.30 = 251,553.90 : x
  2. Step 2: Convert to fraction form
    455,506.69/628,600.30 = 251,553.90/x
  3. Step 3: Cross multiply
    455,506.69x = 628,600.30 × 251,553.90
  4. Step 4: Simplify right side
    455,506.69x = 158,126,858,734.54
  5. Step 5: Solve for x
    x = 158,126,858,734.54/455,506.69
  6. Step 6: Final answer
    x = 347,144.98

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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.