Home / 206,857,321.60-310,285,982.40-91,719,644.80

Finding the Fourth Proportional to 206,857,321.60, 310,285,982.40 and 91,719,644.80

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Solution

The fourth proportional to 206,857,321.60, 310,285,982.40 and 91,719,644.80 is: 137,579,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,857,321.60 : 310,285,982.40 = 91,719,644.80 : x
  2. Step 2: Convert to fraction form
    206,857,321.60/310,285,982.40 = 91,719,644.80/x
  3. Step 3: Cross multiply
    206,857,321.60x = 310,285,982.40 × 91,719,644.80
  4. Step 4: Simplify right side
    206,857,321.60x = 28,459,320,092,147,048
  5. Step 5: Solve for x
    x = 28,459,320,092,147,048/206,857,321.60
  6. Step 6: Final answer
    x = 137,579,467.20

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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.