Home / 321,012,781.97-480,701,744.03-211,505,958.88

Finding the Fourth Proportional to 321,012,781.97, 480,701,744.03 and 211,505,958.88

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Solution

The fourth proportional to 321,012,781.97, 480,701,744.03 and 211,505,958.88 is: 316,720,358.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,012,781.97 : 480,701,744.03 = 211,505,958.88 : x
  2. Step 2: Convert to fraction form
    321,012,781.97/480,701,744.03 = 211,505,958.88/x
  3. Step 3: Cross multiply
    321,012,781.97x = 480,701,744.03 × 211,505,958.88
  4. Step 4: Simplify right side
    321,012,781.97x = 101,671,283,305,680,480
  5. Step 5: Solve for x
    x = 101,671,283,305,680,480/321,012,781.97
  6. Step 6: Final answer
    x = 316,720,358.25

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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.