Home / 279,936,340.80-419,904,511.20-259,529,006.40

Finding the Fourth Proportional to 279,936,340.80, 419,904,511.20 and 259,529,006.40

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Solution

The fourth proportional to 279,936,340.80, 419,904,511.20 and 259,529,006.40 is: 389,293,509.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,340.80 : 419,904,511.20 = 259,529,006.40 : x
  2. Step 2: Convert to fraction form
    279,936,340.80/419,904,511.20 = 259,529,006.40/x
  3. Step 3: Cross multiply
    279,936,340.80x = 419,904,511.20 × 259,529,006.40
  4. Step 4: Simplify right side
    279,936,340.80x = 108,977,400,574,613,664
  5. Step 5: Solve for x
    x = 108,977,400,574,613,664/279,936,340.80
  6. Step 6: Final answer
    x = 389,293,509.60

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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.