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Finding the Fourth Proportional to 221,467,801.60, 332,102,169.60 and 85,107,865.60

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Solution

The fourth proportional to 221,467,801.60, 332,102,169.60 and 85,107,865.60 is: 127,623,548.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,467,801.60 : 332,102,169.60 = 85,107,865.60 : x
  2. Step 2: Convert to fraction form
    221,467,801.60/332,102,169.60 = 85,107,865.60/x
  3. Step 3: Cross multiply
    221,467,801.60x = 332,102,169.60 × 85,107,865.60
  4. Step 4: Simplify right side
    221,467,801.60x = 28,264,506,815,785,204
  5. Step 5: Solve for x
    x = 28,264,506,815,785,204/221,467,801.60
  6. Step 6: Final answer
    x = 127,623,548.94

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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.