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Finding the Fourth Proportional to 247,958.80, 371,938.20 and 148,231.60

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Solution

The fourth proportional to 247,958.80, 371,938.20 and 148,231.60 is: 222,347.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,958.80 : 371,938.20 = 148,231.60 : x
  2. Step 2: Convert to fraction form
    247,958.80/371,938.20 = 148,231.60/x
  3. Step 3: Cross multiply
    247,958.80x = 371,938.20 × 148,231.60
  4. Step 4: Simplify right side
    247,958.80x = 55,132,994,487.12
  5. Step 5: Solve for x
    x = 55,132,994,487.12/247,958.80
  6. Step 6: Final answer
    x = 222,347.40

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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.