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Finding the Fourth Proportional to 418,930.44, 627,602.80 and 247,639.34

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Solution

The fourth proportional to 418,930.44, 627,602.80 and 247,639.34 is: 370,990.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,930.44 : 627,602.80 = 247,639.34 : x
  2. Step 2: Convert to fraction form
    418,930.44/627,602.80 = 247,639.34/x
  3. Step 3: Cross multiply
    418,930.44x = 627,602.80 × 247,639.34
  4. Step 4: Simplify right side
    418,930.44x = 155,419,143,174.15
  5. Step 5: Solve for x
    x = 155,419,143,174.15/418,930.44
  6. Step 6: Final answer
    x = 370,990.33

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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.