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Finding the Fourth Proportional to 455,707.91, 628,874.90 and 251,758.87

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Solution

The fourth proportional to 455,707.91, 628,874.90 and 251,758.87 is: 347,426.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,707.91 : 628,874.90 = 251,758.87 : x
  2. Step 2: Convert to fraction form
    455,707.91/628,874.90 = 251,758.87/x
  3. Step 3: Cross multiply
    455,707.91x = 628,874.90 × 251,758.87
  4. Step 4: Simplify right side
    455,707.91x = 158,324,834,195.36
  5. Step 5: Solve for x
    x = 158,324,834,195.36/455,707.91
  6. Step 6: Final answer
    x = 347,426.13

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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.