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Finding the Fourth Proportional to 279,938,342.60, 419,907,513.90 and 267,183,758.60

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Solution

The fourth proportional to 279,938,342.60, 419,907,513.90 and 267,183,758.60 is: 400,775,637.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,938,342.60 : 419,907,513.90 = 267,183,758.60 : x
  2. Step 2: Convert to fraction form
    279,938,342.60/419,907,513.90 = 267,183,758.60/x
  3. Step 3: Cross multiply
    279,938,342.60x = 419,907,513.90 × 267,183,758.60
  4. Step 4: Simplify right side
    279,938,342.60x = 112,192,467,828,183,728
  5. Step 5: Solve for x
    x = 112,192,467,828,183,728/279,938,342.60
  6. Step 6: Final answer
    x = 400,775,637.90

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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.