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Finding the Fourth Proportional to 221,421.70, 332,132.55 and 63,640.90

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Solution

The fourth proportional to 221,421.70, 332,132.55 and 63,640.90 is: 95,461.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,421.70 : 332,132.55 = 63,640.90 : x
  2. Step 2: Convert to fraction form
    221,421.70/332,132.55 = 63,640.90/x
  3. Step 3: Cross multiply
    221,421.70x = 332,132.55 × 63,640.90
  4. Step 4: Simplify right side
    221,421.70x = 21,137,214,401.30
  5. Step 5: Solve for x
    x = 21,137,214,401.30/221,421.70
  6. Step 6: Final answer
    x = 95,461.35

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1.5x scale

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.