Home / 279,936,496.90-419,904,745.35-257,828,551.30

Finding the Fourth Proportional to 279,936,496.90, 419,904,745.35 and 257,828,551.30

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Solution

The fourth proportional to 279,936,496.90, 419,904,745.35 and 257,828,551.30 is: 386,742,826.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,496.90 : 419,904,745.35 = 257,828,551.30 : x
  2. Step 2: Convert to fraction form
    279,936,496.90/419,904,745.35 = 257,828,551.30/x
  3. Step 3: Cross multiply
    279,936,496.90x = 419,904,745.35 × 257,828,551.30
  4. Step 4: Simplify right side
    279,936,496.90x = 108,263,432,177,585,920
  5. Step 5: Solve for x
    x = 108,263,432,177,585,920/279,936,496.90
  6. Step 6: Final answer
    x = 386,742,826.95

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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.