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Finding the Fourth Proportional to 647,834.83, 971,752.17 and 221,374.34

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Solution

The fourth proportional to 647,834.83, 971,752.17 and 221,374.34 is: 332,061.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,834.83 : 971,752.17 = 221,374.34 : x
  2. Step 2: Convert to fraction form
    647,834.83/971,752.17 = 221,374.34/x
  3. Step 3: Cross multiply
    647,834.83x = 971,752.17 × 221,374.34
  4. Step 4: Simplify right side
    647,834.83x = 215,120,989,311.69
  5. Step 5: Solve for x
    x = 215,120,989,311.69/647,834.83
  6. Step 6: Final answer
    x = 332,061.48

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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.