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Finding the Fourth Proportional to 455,233.14, 628,221.63 and 251,284

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Solution

The fourth proportional to 455,233.14, 628,221.63 and 251,284 is: 346,771.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,233.14 : 628,221.63 = 251,284 : x
  2. Step 2: Convert to fraction form
    455,233.14/628,221.63 = 251,284/x
  3. Step 3: Cross multiply
    455,233.14x = 628,221.63 × 251,284
  4. Step 4: Simplify right side
    455,233.14x = 157,862,044,072.92
  5. Step 5: Solve for x
    x = 157,862,044,072.92/455,233.14
  6. Step 6: Final answer
    x = 346,771.86

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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.