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Finding the Fourth Proportional to 220,558.60, 330,181.80 and 145,763.20

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Solution

The fourth proportional to 220,558.60, 330,181.80 and 145,763.20 is: 218,211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,558.60 : 330,181.80 = 145,763.20 : x
  2. Step 2: Convert to fraction form
    220,558.60/330,181.80 = 145,763.20/x
  3. Step 3: Cross multiply
    220,558.60x = 330,181.80 × 145,763.20
  4. Step 4: Simplify right side
    220,558.60x = 48,128,355,749.76
  5. Step 5: Solve for x
    x = 48,128,355,749.76/220,558.60
  6. Step 6: Final answer
    x = 218,211.20

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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.