Home / 266,200.48-399,319.86-83,815.60

Finding the Fourth Proportional to 266,200.48, 399,319.86 and 83,815.60

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Solution

The fourth proportional to 266,200.48, 399,319.86 and 83,815.60 is: 125,729.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,200.48 : 399,319.86 = 83,815.60 : x
  2. Step 2: Convert to fraction form
    266,200.48/399,319.86 = 83,815.60/x
  3. Step 3: Cross multiply
    266,200.48x = 399,319.86 × 83,815.60
  4. Step 4: Simplify right side
    266,200.48x = 33,469,233,657.82
  5. Step 5: Solve for x
    x = 33,469,233,657.82/266,200.48
  6. Step 6: Final answer
    x = 125,729.43

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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.