Home / 324,771,109.60-487,156,664.40-221,458,979.20

Finding the Fourth Proportional to 324,771,109.60, 487,156,664.40 and 221,458,979.20

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Solution

The fourth proportional to 324,771,109.60, 487,156,664.40 and 221,458,979.20 is: 332,188,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,771,109.60 : 487,156,664.40 = 221,458,979.20 : x
  2. Step 2: Convert to fraction form
    324,771,109.60/487,156,664.40 = 221,458,979.20/x
  3. Step 3: Cross multiply
    324,771,109.60x = 487,156,664.40 × 221,458,979.20
  4. Step 4: Simplify right side
    324,771,109.60x = 107,885,217,608,500,976
  5. Step 5: Solve for x
    x = 107,885,217,608,500,976/324,771,109.60
  6. Step 6: Final answer
    x = 332,188,468.80

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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.