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Finding the Fourth Proportional to 455,221.37, 628,205.57 and 251,272.37

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Solution

The fourth proportional to 455,221.37, 628,205.57 and 251,272.37 is: 346,755.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,221.37 : 628,205.57 = 251,272.37 : x
  2. Step 2: Convert to fraction form
    455,221.37/628,205.57 = 251,272.37/x
  3. Step 3: Cross multiply
    455,221.37x = 628,205.57 × 251,272.37
  4. Step 4: Simplify right side
    455,221.37x = 157,850,698,023.71
  5. Step 5: Solve for x
    x = 157,850,698,023.71/455,221.37
  6. Step 6: Final answer
    x = 346,755.91

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1.5x scale

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.