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Finding the Fourth Proportional to 247,858.40, 371,377.20 and 142,493.60

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Solution

The fourth proportional to 247,858.40, 371,377.20 and 142,493.60 is: 213,504.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,858.40 : 371,377.20 = 142,493.60 : x
  2. Step 2: Convert to fraction form
    247,858.40/371,377.20 = 142,493.60/x
  3. Step 3: Cross multiply
    247,858.40x = 371,377.20 × 142,493.60
  4. Step 4: Simplify right side
    247,858.40x = 52,918,874,185.92
  5. Step 5: Solve for x
    x = 52,918,874,185.92/247,858.40
  6. Step 6: Final answer
    x = 213,504.46

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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.