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Finding the Fourth Proportional to 396,225,985.80, 594,338,978.70 and 248,910,540.60

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Solution

The fourth proportional to 396,225,985.80, 594,338,978.70 and 248,910,540.60 is: 373,365,810.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,225,985.80 : 594,338,978.70 = 248,910,540.60 : x
  2. Step 2: Convert to fraction form
    396,225,985.80/594,338,978.70 = 248,910,540.60/x
  3. Step 3: Cross multiply
    396,225,985.80x = 594,338,978.70 × 248,910,540.60
  4. Step 4: Simplify right side
    396,225,985.80x = 147,937,236,487,868,896
  5. Step 5: Solve for x
    x = 147,937,236,487,868,896/396,225,985.80
  6. Step 6: Final answer
    x = 373,365,810.90

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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.