Home / 198,005,411.20-296,890,018.80-121,383,428.80

Finding the Fourth Proportional to 198,005,411.20, 296,890,018.80 and 121,383,428.80

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Solution

The fourth proportional to 198,005,411.20, 296,890,018.80 and 121,383,428.80 is: 182,002,745.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,005,411.20 : 296,890,018.80 = 121,383,428.80 : x
  2. Step 2: Convert to fraction form
    198,005,411.20/296,890,018.80 = 121,383,428.80/x
  3. Step 3: Cross multiply
    198,005,411.20x = 296,890,018.80 × 121,383,428.80
  4. Step 4: Simplify right side
    198,005,411.20x = 36,037,528,458,440,464
  5. Step 5: Solve for x
    x = 36,037,528,458,440,464/198,005,411.20
  6. Step 6: Final answer
    x = 182,002,745.48

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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.