Home / 279,858.10-419,875.94-99,939.60

Finding the Fourth Proportional to 279,858.10, 419,875.94 and 99,939.60

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Solution

The fourth proportional to 279,858.10, 419,875.94 and 99,939.60 is: 149,941.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,858.10 : 419,875.94 = 99,939.60 : x
  2. Step 2: Convert to fraction form
    279,858.10/419,875.94 = 99,939.60/x
  3. Step 3: Cross multiply
    279,858.10x = 419,875.94 × 99,939.60
  4. Step 4: Simplify right side
    279,858.10x = 41,962,233,493.22
  5. Step 5: Solve for x
    x = 41,962,233,493.22/279,858.10
  6. Step 6: Final answer
    x = 149,941.11

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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.