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Finding the Fourth Proportional to 279,936,610.60, 419,904,915.90 and 254,406,447.40

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Solution

The fourth proportional to 279,936,610.60, 419,904,915.90 and 254,406,447.40 is: 381,609,671.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,610.60 : 419,904,915.90 = 254,406,447.40 : x
  2. Step 2: Convert to fraction form
    279,936,610.60/419,904,915.90 = 254,406,447.40/x
  3. Step 3: Cross multiply
    279,936,610.60x = 419,904,915.90 × 254,406,447.40
  4. Step 4: Simplify right side
    279,936,610.60x = 106,826,517,899,914,768
  5. Step 5: Solve for x
    x = 106,826,517,899,914,768/279,936,610.60
  6. Step 6: Final answer
    x = 381,609,671.10

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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.