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Finding the Fourth Proportional to 239,910.40, 359,651.84 and 121,520.80

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Solution

The fourth proportional to 239,910.40, 359,651.84 and 121,520.80 is: 182,172.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,910.40 : 359,651.84 = 121,520.80 : x
  2. Step 2: Convert to fraction form
    239,910.40/359,651.84 = 121,520.80/x
  3. Step 3: Cross multiply
    239,910.40x = 359,651.84 × 121,520.80
  4. Step 4: Simplify right side
    239,910.40x = 43,705,179,318.27
  5. Step 5: Solve for x
    x = 43,705,179,318.27/239,910.40
  6. Step 6: Final answer
    x = 182,172.93

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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.