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Finding the Fourth Proportional to 418,588.75, 627,883.13 and 123,100.75

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Solution

The fourth proportional to 418,588.75, 627,883.13 and 123,100.75 is: 184,651.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,588.75 : 627,883.13 = 123,100.75 : x
  2. Step 2: Convert to fraction form
    418,588.75/627,883.13 = 123,100.75/x
  3. Step 3: Cross multiply
    418,588.75x = 627,883.13 × 123,100.75
  4. Step 4: Simplify right side
    418,588.75x = 77,292,884,215.35
  5. Step 5: Solve for x
    x = 77,292,884,215.35/418,588.75
  6. Step 6: Final answer
    x = 184,651.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.