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Finding the Fourth Proportional to 221,648.52, 332,320.90 and 79,490.76

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Solution

The fourth proportional to 221,648.52, 332,320.90 and 79,490.76 is: 119,181.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,648.52 : 332,320.90 = 79,490.76 : x
  2. Step 2: Convert to fraction form
    221,648.52/332,320.90 = 79,490.76/x
  3. Step 3: Cross multiply
    221,648.52x = 332,320.90 × 79,490.76
  4. Step 4: Simplify right side
    221,648.52x = 26,416,440,904.88
  5. Step 5: Solve for x
    x = 26,416,440,904.88/221,648.52
  6. Step 6: Final answer
    x = 119,181.67

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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.