Home / 221,232,661.20-331,848,991.80-199,313,672.40

Finding the Fourth Proportional to 221,232,661.20, 331,848,991.80 and 199,313,672.40

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Solution

The fourth proportional to 221,232,661.20, 331,848,991.80 and 199,313,672.40 is: 298,970,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,232,661.20 : 331,848,991.80 = 199,313,672.40 : x
  2. Step 2: Convert to fraction form
    221,232,661.20/331,848,991.80 = 199,313,672.40/x
  3. Step 3: Cross multiply
    221,232,661.20x = 331,848,991.80 × 199,313,672.40
  4. Step 4: Simplify right side
    221,232,661.20x = 66,142,041,237,895,488
  5. Step 5: Solve for x
    x = 66,142,041,237,895,488/221,232,661.20
  6. Step 6: Final answer
    x = 298,970,508.60

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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.