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Finding the Fourth Proportional to 383,729.60, 576,112.80 and 243,761.60

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Solution

The fourth proportional to 383,729.60, 576,112.80 and 243,761.60 is: 365,971.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,729.60 : 576,112.80 = 243,761.60 : x
  2. Step 2: Convert to fraction form
    383,729.60/576,112.80 = 243,761.60/x
  3. Step 3: Cross multiply
    383,729.60x = 576,112.80 × 243,761.60
  4. Step 4: Simplify right side
    383,729.60x = 140,434,177,908.48
  5. Step 5: Solve for x
    x = 140,434,177,908.48/383,729.60
  6. Step 6: Final answer
    x = 365,971.71

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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.