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Finding the Fourth Proportional to 308,761.20, 463,141.80 and 131,223.60

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Solution

The fourth proportional to 308,761.20, 463,141.80 and 131,223.60 is: 196,835.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,761.20 : 463,141.80 = 131,223.60 : x
  2. Step 2: Convert to fraction form
    308,761.20/463,141.80 = 131,223.60/x
  3. Step 3: Cross multiply
    308,761.20x = 463,141.80 × 131,223.60
  4. Step 4: Simplify right side
    308,761.20x = 60,775,134,306.48
  5. Step 5: Solve for x
    x = 60,775,134,306.48/308,761.20
  6. Step 6: Final answer
    x = 196,835.40

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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.