Home / 393,865.96-543,532.26-215,017.96

Finding the Fourth Proportional to 393,865.96, 543,532.26 and 215,017.96

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Solution

The fourth proportional to 393,865.96, 543,532.26 and 215,017.96 is: 296,723.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,865.96 : 543,532.26 = 215,017.96 : x
  2. Step 2: Convert to fraction form
    393,865.96/543,532.26 = 215,017.96/x
  3. Step 3: Cross multiply
    393,865.96x = 543,532.26 × 215,017.96
  4. Step 4: Simplify right side
    393,865.96x = 116,869,197,739.39
  5. Step 5: Solve for x
    x = 116,869,197,739.39/393,865.96
  6. Step 6: Final answer
    x = 296,723.28

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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.