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Finding the Fourth Proportional to 455,785.54, 628,967.13 and 251,832.07

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Solution

The fourth proportional to 455,785.54, 628,967.13 and 251,832.07 is: 347,518.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,785.54 : 628,967.13 = 251,832.07 : x
  2. Step 2: Convert to fraction form
    455,785.54/628,967.13 = 251,832.07/x
  3. Step 3: Cross multiply
    455,785.54x = 628,967.13 × 251,832.07
  4. Step 4: Simplify right side
    455,785.54x = 158,394,094,151.70
  5. Step 5: Solve for x
    x = 158,394,094,151.70/455,785.54
  6. Step 6: Final answer
    x = 347,518.91

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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.