Home / 221,298,756.40-331,948,134.60-206,182,212.40

Finding the Fourth Proportional to 221,298,756.40, 331,948,134.60 and 206,182,212.40

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Solution

The fourth proportional to 221,298,756.40, 331,948,134.60 and 206,182,212.40 is: 309,273,318.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,298,756.40 : 331,948,134.60 = 206,182,212.40 : x
  2. Step 2: Convert to fraction form
    221,298,756.40/331,948,134.60 = 206,182,212.40/x
  3. Step 3: Cross multiply
    221,298,756.40x = 331,948,134.60 × 206,182,212.40
  4. Step 4: Simplify right side
    221,298,756.40x = 68,441,800,793,880,992
  5. Step 5: Solve for x
    x = 68,441,800,793,880,992/221,298,756.40
  6. Step 6: Final answer
    x = 309,273,318.60

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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.