Home / 279,860.85-419,880.06-99,942.36

Finding the Fourth Proportional to 279,860.85, 419,880.06 and 99,942.36

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Solution

The fourth proportional to 279,860.85, 419,880.06 and 99,942.36 is: 149,945.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,860.85 : 419,880.06 = 99,942.36 : x
  2. Step 2: Convert to fraction form
    279,860.85/419,880.06 = 99,942.36/x
  3. Step 3: Cross multiply
    279,860.85x = 419,880.06 × 99,942.36
  4. Step 4: Simplify right side
    279,860.85x = 41,963,804,113.34
  5. Step 5: Solve for x
    x = 41,963,804,113.34/279,860.85
  6. Step 6: Final answer
    x = 149,945.25

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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.