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Finding the Fourth Proportional to 218,639.60, 327,959.40 and 118,847.60

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Solution

The fourth proportional to 218,639.60, 327,959.40 and 118,847.60 is: 178,271.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,639.60 : 327,959.40 = 118,847.60 : x
  2. Step 2: Convert to fraction form
    218,639.60/327,959.40 = 118,847.60/x
  3. Step 3: Cross multiply
    218,639.60x = 327,959.40 × 118,847.60
  4. Step 4: Simplify right side
    218,639.60x = 38,977,187,587.44
  5. Step 5: Solve for x
    x = 38,977,187,587.44/218,639.60
  6. Step 6: Final answer
    x = 178,271.40

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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.