Home / 279,936,779.40-419,905,169.10-171,097,662.60

Finding the Fourth Proportional to 279,936,779.40, 419,905,169.10 and 171,097,662.60

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Solution

The fourth proportional to 279,936,779.40, 419,905,169.10 and 171,097,662.60 is: 256,646,493.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,779.40 : 419,905,169.10 = 171,097,662.60 : x
  2. Step 2: Convert to fraction form
    279,936,779.40/419,905,169.10 = 171,097,662.60/x
  3. Step 3: Cross multiply
    279,936,779.40x = 419,905,169.10 × 171,097,662.60
  4. Step 4: Simplify right side
    279,936,779.40x = 71,844,792,946,667,744
  5. Step 5: Solve for x
    x = 71,844,792,946,667,744/279,936,779.40
  6. Step 6: Final answer
    x = 256,646,493.90

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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.