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Finding the Fourth Proportional to 379,414.70, 570,106.20 and 336,112.10

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Solution

The fourth proportional to 379,414.70, 570,106.20 and 336,112.10 is: 505,039.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,414.70 : 570,106.20 = 336,112.10 : x
  2. Step 2: Convert to fraction form
    379,414.70/570,106.20 = 336,112.10/x
  3. Step 3: Cross multiply
    379,414.70x = 570,106.20 × 336,112.10
  4. Step 4: Simplify right side
    379,414.70x = 191,619,592,105.02
  5. Step 5: Solve for x
    x = 191,619,592,105.02/379,414.70
  6. Step 6: Final answer
    x = 505,039.98

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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.