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Finding the Fourth Proportional to 455,294.82, 628,311.96 and 251,345.88

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Solution

The fourth proportional to 455,294.82, 628,311.96 and 251,345.88 is: 346,860.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,294.82 : 628,311.96 = 251,345.88 : x
  2. Step 2: Convert to fraction form
    455,294.82/628,311.96 = 251,345.88/x
  3. Step 3: Cross multiply
    455,294.82x = 628,311.96 × 251,345.88
  4. Step 4: Simplify right side
    455,294.82x = 157,923,622,500.73
  5. Step 5: Solve for x
    x = 157,923,622,500.73/455,294.82
  6. Step 6: Final answer
    x = 346,860.13

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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.