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Finding the Fourth Proportional to 886,479, 1,329,718.50 and 221,631

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Solution

The fourth proportional to 886,479, 1,329,718.50 and 221,631 is: 332,446.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,479 : 1,329,718.50 = 221,631 : x
  2. Step 2: Convert to fraction form
    886,479/1,329,718.50 = 221,631/x
  3. Step 3: Cross multiply
    886,479x = 1,329,718.50 × 221,631
  4. Step 4: Simplify right side
    886,479x = 294,706,840,873.50
  5. Step 5: Solve for x
    x = 294,706,840,873.50/886,479
  6. Step 6: Final answer
    x = 332,446.50

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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.