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Finding the Fourth Proportional to 351,709.40, 485,358.31 and 190,568.81

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Solution

The fourth proportional to 351,709.40, 485,358.31 and 190,568.81 is: 262,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,709.40 : 485,358.31 = 190,568.81 : x
  2. Step 2: Convert to fraction form
    351,709.40/485,358.31 = 190,568.81/x
  3. Step 3: Cross multiply
    351,709.40x = 485,358.31 × 190,568.81
  4. Step 4: Simplify right side
    351,709.40x = 92,494,157,011.92
  5. Step 5: Solve for x
    x = 92,494,157,011.92/351,709.40
  6. Step 6: Final answer
    x = 262,984.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.