Home / 221,981,122.80-332,971,684.20-212,911,196.40

Finding the Fourth Proportional to 221,981,122.80, 332,971,684.20 and 212,911,196.40

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Solution

The fourth proportional to 221,981,122.80, 332,971,684.20 and 212,911,196.40 is: 319,366,794.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,981,122.80 : 332,971,684.20 = 212,911,196.40 : x
  2. Step 2: Convert to fraction form
    221,981,122.80/332,971,684.20 = 212,911,196.40/x
  3. Step 3: Cross multiply
    221,981,122.80x = 332,971,684.20 × 212,911,196.40
  4. Step 4: Simplify right side
    221,981,122.80x = 70,893,399,650,344,976
  5. Step 5: Solve for x
    x = 70,893,399,650,344,976/221,981,122.80
  6. Step 6: Final answer
    x = 319,366,794.60

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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.