Home / 221,959,936.80-332,939,905.20-212,890,010.40

Finding the Fourth Proportional to 221,959,936.80, 332,939,905.20 and 212,890,010.40

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Solution

The fourth proportional to 221,959,936.80, 332,939,905.20 and 212,890,010.40 is: 319,335,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,959,936.80 : 332,939,905.20 = 212,890,010.40 : x
  2. Step 2: Convert to fraction form
    221,959,936.80/332,939,905.20 = 212,890,010.40/x
  3. Step 3: Cross multiply
    221,959,936.80x = 332,939,905.20 × 212,890,010.40
  4. Step 4: Simplify right side
    221,959,936.80x = 70,879,579,880,603,016
  5. Step 5: Solve for x
    x = 70,879,579,880,603,016/221,959,936.80
  6. Step 6: Final answer
    x = 319,335,015.60

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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.