Home / 321,012,781.08-480,701,743.20-211,505,958.24

Finding the Fourth Proportional to 321,012,781.08, 480,701,743.20 and 211,505,958.24

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Solution

The fourth proportional to 321,012,781.08, 480,701,743.20 and 211,505,958.24 is: 316,720,357.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,012,781.08 : 480,701,743.20 = 211,505,958.24 : x
  2. Step 2: Convert to fraction form
    321,012,781.08/480,701,743.20 = 211,505,958.24/x
  3. Step 3: Cross multiply
    321,012,781.08x = 480,701,743.20 × 211,505,958.24
  4. Step 4: Simplify right side
    321,012,781.08x = 101,671,282,823,154,400
  5. Step 5: Solve for x
    x = 101,671,282,823,154,400/321,012,781.08
  6. Step 6: Final answer
    x = 316,720,357.62

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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.