Home / 218,422,678.88-327,635,243.10-72,855,840.64

Finding the Fourth Proportional to 218,422,678.88, 327,635,243.10 and 72,855,840.64

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Solution

The fourth proportional to 218,422,678.88, 327,635,243.10 and 72,855,840.64 is: 109,284,169.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,422,678.88 : 327,635,243.10 = 72,855,840.64 : x
  2. Step 2: Convert to fraction form
    218,422,678.88/327,635,243.10 = 72,855,840.64/x
  3. Step 3: Cross multiply
    218,422,678.88x = 327,635,243.10 × 72,855,840.64
  4. Step 4: Simplify right side
    218,422,678.88x = 23,870,141,059,341,260
  5. Step 5: Solve for x
    x = 23,870,141,059,341,260/218,422,678.88
  6. Step 6: Final answer
    x = 109,284,169.49

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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.