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Finding the Fourth Proportional to 455,092.96, 628,023.90 and 251,145.76

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Solution

The fourth proportional to 455,092.96, 628,023.90 and 251,145.76 is: 346,578.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,092.96 : 628,023.90 = 251,145.76 : x
  2. Step 2: Convert to fraction form
    455,092.96/628,023.90 = 251,145.76/x
  3. Step 3: Cross multiply
    455,092.96x = 628,023.90 × 251,145.76
  4. Step 4: Simplify right side
    455,092.96x = 157,725,539,663.66
  5. Step 5: Solve for x
    x = 157,725,539,663.66/455,092.96
  6. Step 6: Final answer
    x = 346,578.73

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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.