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Finding the Fourth Proportional to 263,999.60, 395,999.40 and 130,900.40

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Solution

The fourth proportional to 263,999.60, 395,999.40 and 130,900.40 is: 196,350.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,999.60 : 395,999.40 = 130,900.40 : x
  2. Step 2: Convert to fraction form
    263,999.60/395,999.40 = 130,900.40/x
  3. Step 3: Cross multiply
    263,999.60x = 395,999.40 × 130,900.40
  4. Step 4: Simplify right side
    263,999.60x = 51,836,479,859.76
  5. Step 5: Solve for x
    x = 51,836,479,859.76/263,999.60
  6. Step 6: Final answer
    x = 196,350.60

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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.