Home / 221,245,332.40-331,584,563.40-196,869,905.20

Finding the Fourth Proportional to 221,245,332.40, 331,584,563.40 and 196,869,905.20

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Solution

The fourth proportional to 221,245,332.40, 331,584,563.40 and 196,869,905.20 is: 295,052,649.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,245,332.40 : 331,584,563.40 = 196,869,905.20 : x
  2. Step 2: Convert to fraction form
    221,245,332.40/331,584,563.40 = 196,869,905.20/x
  3. Step 3: Cross multiply
    221,245,332.40x = 331,584,563.40 × 196,869,905.20
  4. Step 4: Simplify right side
    221,245,332.40x = 65,279,021,562,341,384
  5. Step 5: Solve for x
    x = 65,279,021,562,341,384/221,245,332.40
  6. Step 6: Final answer
    x = 295,052,649.72

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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.