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Finding the Fourth Proportional to 455,751.24, 628,883.08 and 251,790

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Solution

The fourth proportional to 455,751.24, 628,883.08 and 251,790 is: 347,440.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,751.24 : 628,883.08 = 251,790 : x
  2. Step 2: Convert to fraction form
    455,751.24/628,883.08 = 251,790/x
  3. Step 3: Cross multiply
    455,751.24x = 628,883.08 × 251,790
  4. Step 4: Simplify right side
    455,751.24x = 158,346,470,713.20
  5. Step 5: Solve for x
    x = 158,346,470,713.20/455,751.24
  6. Step 6: Final answer
    x = 347,440.57

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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.