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Finding the Fourth Proportional to 627,150.60, 865,447.88 and 355,243.59

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Solution

The fourth proportional to 627,150.60, 865,447.88 and 355,243.59 is: 490,224.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,150.60 : 865,447.88 = 355,243.59 : x
  2. Step 2: Convert to fraction form
    627,150.60/865,447.88 = 355,243.59/x
  3. Step 3: Cross multiply
    627,150.60x = 865,447.88 × 355,243.59
  4. Step 4: Simplify right side
    627,150.60x = 307,444,810,072.87
  5. Step 5: Solve for x
    x = 307,444,810,072.87/627,150.60
  6. Step 6: Final answer
    x = 490,224.85

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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.