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Finding the Fourth Proportional to 247,384.20, 371,016.90 and 69,907.80

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Solution

The fourth proportional to 247,384.20, 371,016.90 and 69,907.80 is: 104,844.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,384.20 : 371,016.90 = 69,907.80 : x
  2. Step 2: Convert to fraction form
    247,384.20/371,016.90 = 69,907.80/x
  3. Step 3: Cross multiply
    247,384.20x = 371,016.90 × 69,907.80
  4. Step 4: Simplify right side
    247,384.20x = 25,936,975,241.82
  5. Step 5: Solve for x
    x = 25,936,975,241.82/247,384.20
  6. Step 6: Final answer
    x = 104,844.91

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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.