Home / 278,029,583.95-383,680,826.75-154,290,173.71

Finding the Fourth Proportional to 278,029,583.95, 383,680,826.75 and 154,290,173.71

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Solution

The fourth proportional to 278,029,583.95, 383,680,826.75 and 154,290,173.71 is: 212,920,440.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,029,583.95 : 383,680,826.75 = 154,290,173.71 : x
  2. Step 2: Convert to fraction form
    278,029,583.95/383,680,826.75 = 154,290,173.71/x
  3. Step 3: Cross multiply
    278,029,583.95x = 383,680,826.75 × 154,290,173.71
  4. Step 4: Simplify right side
    278,029,583.95x = 59,198,181,408,453,920
  5. Step 5: Solve for x
    x = 59,198,181,408,453,920/278,029,583.95
  6. Step 6: Final answer
    x = 212,920,440.22

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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.