Home / 221,981,124.80-332,971,687.20-212,911,198.40

Finding the Fourth Proportional to 221,981,124.80, 332,971,687.20 and 212,911,198.40

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Solution

The fourth proportional to 221,981,124.80, 332,971,687.20 and 212,911,198.40 is: 319,366,797.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,981,124.80 : 332,971,687.20 = 212,911,198.40 : x
  2. Step 2: Convert to fraction form
    221,981,124.80/332,971,687.20 = 212,911,198.40/x
  3. Step 3: Cross multiply
    221,981,124.80x = 332,971,687.20 × 212,911,198.40
  4. Step 4: Simplify right side
    221,981,124.80x = 70,893,400,955,021,936
  5. Step 5: Solve for x
    x = 70,893,400,955,021,936/221,981,124.80
  6. Step 6: Final answer
    x = 319,366,797.60

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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.