Home / 429,949.20-644,930.10-163,724.43

Finding the Fourth Proportional to 429,949.20, 644,930.10 and 163,724.43

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Solution

The fourth proportional to 429,949.20, 644,930.10 and 163,724.43 is: 245,589.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,949.20 : 644,930.10 = 163,724.43 : x
  2. Step 2: Convert to fraction form
    429,949.20/644,930.10 = 163,724.43/x
  3. Step 3: Cross multiply
    429,949.20x = 644,930.10 × 163,724.43
  4. Step 4: Simplify right side
    429,949.20x = 105,590,813,012.34
  5. Step 5: Solve for x
    x = 105,590,813,012.34/429,949.20
  6. Step 6: Final answer
    x = 245,589.04

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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.