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Finding the Fourth Proportional to 273,394,627.20, 410,091,940.80 and 81,918,403.20

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Solution

The fourth proportional to 273,394,627.20, 410,091,940.80 and 81,918,403.20 is: 122,877,604.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,394,627.20 : 410,091,940.80 = 81,918,403.20 : x
  2. Step 2: Convert to fraction form
    273,394,627.20/410,091,940.80 = 81,918,403.20/x
  3. Step 3: Cross multiply
    273,394,627.20x = 410,091,940.80 × 81,918,403.20
  4. Step 4: Simplify right side
    273,394,627.20x = 33,594,076,955,524,932
  5. Step 5: Solve for x
    x = 33,594,076,955,524,932/273,394,627.20
  6. Step 6: Final answer
    x = 122,877,604.80

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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.