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Finding the Fourth Proportional to 220,544.70, 330,819.60 and 209,788.74

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Solution

The fourth proportional to 220,544.70, 330,819.60 and 209,788.74 is: 314,685.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,544.70 : 330,819.60 = 209,788.74 : x
  2. Step 2: Convert to fraction form
    220,544.70/330,819.60 = 209,788.74/x
  3. Step 3: Cross multiply
    220,544.70x = 330,819.60 × 209,788.74
  4. Step 4: Simplify right side
    220,544.70x = 69,402,227,051.30
  5. Step 5: Solve for x
    x = 69,402,227,051.30/220,544.70
  6. Step 6: Final answer
    x = 314,685.54

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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.