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Finding the Fourth Proportional to 444,877.20, 666,998.76 and 208,090.80

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Solution

The fourth proportional to 444,877.20, 666,998.76 and 208,090.80 is: 311,987.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,877.20 : 666,998.76 = 208,090.80 : x
  2. Step 2: Convert to fraction form
    444,877.20/666,998.76 = 208,090.80/x
  3. Step 3: Cross multiply
    444,877.20x = 666,998.76 × 208,090.80
  4. Step 4: Simplify right side
    444,877.20x = 138,796,305,567.41
  5. Step 5: Solve for x
    x = 138,796,305,567.41/444,877.20
  6. Step 6: Final answer
    x = 311,987.90

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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.