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Finding the Fourth Proportional to 455,581.30, 628,648.25 and 251,620.08

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Solution

The fourth proportional to 455,581.30, 628,648.25 and 251,620.08 is: 347,205.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,581.30 : 628,648.25 = 251,620.08 : x
  2. Step 2: Convert to fraction form
    455,581.30/628,648.25 = 251,620.08/x
  3. Step 3: Cross multiply
    455,581.30x = 628,648.25 × 251,620.08
  4. Step 4: Simplify right side
    455,581.30x = 158,180,525,530.72
  5. Step 5: Solve for x
    x = 158,180,525,530.72/455,581.30
  6. Step 6: Final answer
    x = 347,205.92

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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.