Home / 278,029,581.45-383,680,823.30-154,290,171.21

Finding the Fourth Proportional to 278,029,581.45, 383,680,823.30 and 154,290,171.21

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Solution

The fourth proportional to 278,029,581.45, 383,680,823.30 and 154,290,171.21 is: 212,920,436.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,029,581.45 : 383,680,823.30 = 154,290,171.21 : x
  2. Step 2: Convert to fraction form
    278,029,581.45/383,680,823.30 = 154,290,171.21/x
  3. Step 3: Cross multiply
    278,029,581.45x = 383,680,823.30 × 154,290,171.21
  4. Step 4: Simplify right side
    278,029,581.45x = 59,198,179,916,950,760
  5. Step 5: Solve for x
    x = 59,198,179,916,950,760/278,029,581.45
  6. Step 6: Final answer
    x = 212,920,436.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.