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Finding the Fourth Proportional to 306,498.60, 459,747.90 and 221,861.70

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Solution

The fourth proportional to 306,498.60, 459,747.90 and 221,861.70 is: 332,792.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,498.60 : 459,747.90 = 221,861.70 : x
  2. Step 2: Convert to fraction form
    306,498.60/459,747.90 = 221,861.70/x
  3. Step 3: Cross multiply
    306,498.60x = 459,747.90 × 221,861.70
  4. Step 4: Simplify right side
    306,498.60x = 102,000,450,665.43
  5. Step 5: Solve for x
    x = 102,000,450,665.43/306,498.60
  6. Step 6: Final answer
    x = 332,792.55

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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.