Home / 279,905.90-419,590.05-92,821.10

Finding the Fourth Proportional to 279,905.90, 419,590.05 and 92,821.10

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Solution

The fourth proportional to 279,905.90, 419,590.05 and 92,821.10 is: 139,142.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,905.90 : 419,590.05 = 92,821.10 : x
  2. Step 2: Convert to fraction form
    279,905.90/419,590.05 = 92,821.10/x
  3. Step 3: Cross multiply
    279,905.90x = 419,590.05 × 92,821.10
  4. Step 4: Simplify right side
    279,905.90x = 38,946,809,990.06
  5. Step 5: Solve for x
    x = 38,946,809,990.06/279,905.90
  6. Step 6: Final answer
    x = 139,142.51

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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.