Home / 279,721.20-419,644.98-102,229.32

Finding the Fourth Proportional to 279,721.20, 419,644.98 and 102,229.32

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Solution

The fourth proportional to 279,721.20, 419,644.98 and 102,229.32 is: 153,367.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,721.20 : 419,644.98 = 102,229.32 : x
  2. Step 2: Convert to fraction form
    279,721.20/419,644.98 = 102,229.32/x
  3. Step 3: Cross multiply
    279,721.20x = 419,644.98 × 102,229.32
  4. Step 4: Simplify right side
    279,721.20x = 42,900,020,946.81
  5. Step 5: Solve for x
    x = 42,900,020,946.81/279,721.20
  6. Step 6: Final answer
    x = 153,367.07

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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.