Home / 279,936,296.40-419,904,444.60-254,427,128.40

Finding the Fourth Proportional to 279,936,296.40, 419,904,444.60 and 254,427,128.40

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Solution

The fourth proportional to 279,936,296.40, 419,904,444.60 and 254,427,128.40 is: 381,640,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,296.40 : 419,904,444.60 = 254,427,128.40 : x
  2. Step 2: Convert to fraction form
    279,936,296.40/419,904,444.60 = 254,427,128.40/x
  3. Step 3: Cross multiply
    279,936,296.40x = 419,904,444.60 × 254,427,128.40
  4. Step 4: Simplify right side
    279,936,296.40x = 106,835,082,041,974,896
  5. Step 5: Solve for x
    x = 106,835,082,041,974,896/279,936,296.40
  6. Step 6: Final answer
    x = 381,640,692.60

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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.