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Finding the Fourth Proportional to 313,662.43, 432,858.09 and 170,424.87

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Solution

The fourth proportional to 313,662.43, 432,858.09 and 170,424.87 is: 235,188.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,662.43 : 432,858.09 = 170,424.87 : x
  2. Step 2: Convert to fraction form
    313,662.43/432,858.09 = 170,424.87/x
  3. Step 3: Cross multiply
    313,662.43x = 432,858.09 × 170,424.87
  4. Step 4: Simplify right side
    313,662.43x = 73,769,783,716.70
  5. Step 5: Solve for x
    x = 73,769,783,716.70/313,662.43
  6. Step 6: Final answer
    x = 235,188.46

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1.5x scale

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.