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Finding the Fourth Proportional to 429,552.30, 644,328.45 and 149,069.55

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Solution

The fourth proportional to 429,552.30, 644,328.45 and 149,069.55 is: 223,604.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,552.30 : 644,328.45 = 149,069.55 : x
  2. Step 2: Convert to fraction form
    429,552.30/644,328.45 = 149,069.55/x
  3. Step 3: Cross multiply
    429,552.30x = 644,328.45 × 149,069.55
  4. Step 4: Simplify right side
    429,552.30x = 96,049,752,093.70
  5. Step 5: Solve for x
    x = 96,049,752,093.70/429,552.30
  6. Step 6: Final answer
    x = 223,604.33

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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.