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Finding the Fourth Proportional to 239,611.72, 359,370.60 and 79,662.64

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Solution

The fourth proportional to 239,611.72, 359,370.60 and 79,662.64 is: 119,478.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,611.72 : 359,370.60 = 79,662.64 : x
  2. Step 2: Convert to fraction form
    239,611.72/359,370.60 = 79,662.64/x
  3. Step 3: Cross multiply
    239,611.72x = 359,370.60 × 79,662.64
  4. Step 4: Simplify right side
    239,611.72x = 28,628,410,734.38
  5. Step 5: Solve for x
    x = 28,628,410,734.38/239,611.72
  6. Step 6: Final answer
    x = 119,478.34

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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.