Home / 379,939.20-569,835.90-113,708.40

Finding the Fourth Proportional to 379,939.20, 569,835.90 and 113,708.40

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Solution

The fourth proportional to 379,939.20, 569,835.90 and 113,708.40 is: 170,540.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,939.20 : 569,835.90 = 113,708.40 : x
  2. Step 2: Convert to fraction form
    379,939.20/569,835.90 = 113,708.40/x
  3. Step 3: Cross multiply
    379,939.20x = 569,835.90 × 113,708.40
  4. Step 4: Simplify right side
    379,939.20x = 64,795,128,451.56
  5. Step 5: Solve for x
    x = 64,795,128,451.56/379,939.20
  6. Step 6: Final answer
    x = 170,540.78

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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.