Home / 221,147,445.20-331,721,167.80-217,746,222.80

Finding the Fourth Proportional to 221,147,445.20, 331,721,167.80 and 217,746,222.80

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Solution

The fourth proportional to 221,147,445.20, 331,721,167.80 and 217,746,222.80 is: 326,619,334.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,147,445.20 : 331,721,167.80 = 217,746,222.80 : x
  2. Step 2: Convert to fraction form
    221,147,445.20/331,721,167.80 = 217,746,222.80/x
  3. Step 3: Cross multiply
    221,147,445.20x = 331,721,167.80 × 217,746,222.80
  4. Step 4: Simplify right side
    221,147,445.20x = 72,231,031,311,254,992
  5. Step 5: Solve for x
    x = 72,231,031,311,254,992/221,147,445.20
  6. Step 6: Final answer
    x = 326,619,334.20

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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.