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Finding the Fourth Proportional to 455,104.96, 628,040.46 and 251,157.76

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Solution

The fourth proportional to 455,104.96, 628,040.46 and 251,157.76 is: 346,595.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,104.96 : 628,040.46 = 251,157.76 : x
  2. Step 2: Convert to fraction form
    455,104.96/628,040.46 = 251,157.76/x
  3. Step 3: Cross multiply
    455,104.96x = 628,040.46 × 251,157.76
  4. Step 4: Simplify right side
    455,104.96x = 157,737,235,122.97
  5. Step 5: Solve for x
    x = 157,737,235,122.97/455,104.96
  6. Step 6: Final answer
    x = 346,595.29

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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.