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Finding the Fourth Proportional to 247,331.90, 371,012.21 and 69,824.05

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Solution

The fourth proportional to 247,331.90, 371,012.21 and 69,824.05 is: 104,740.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,331.90 : 371,012.21 = 69,824.05 : x
  2. Step 2: Convert to fraction form
    247,331.90/371,012.21 = 69,824.05/x
  3. Step 3: Cross multiply
    247,331.90x = 371,012.21 × 69,824.05
  4. Step 4: Simplify right side
    247,331.90x = 25,905,572,897.47
  5. Step 5: Solve for x
    x = 25,905,572,897.47/247,331.90
  6. Step 6: Final answer
    x = 104,740.12

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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.