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Finding the Fourth Proportional to 368,628.56, 552,613.56 and 143,936.72

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Solution

The fourth proportional to 368,628.56, 552,613.56 and 143,936.72 is: 215,776.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,628.56 : 552,613.56 = 143,936.72 : x
  2. Step 2: Convert to fraction form
    368,628.56/552,613.56 = 143,936.72/x
  3. Step 3: Cross multiply
    368,628.56x = 552,613.56 × 143,936.72
  4. Step 4: Simplify right side
    368,628.56x = 79,541,383,253.92
  5. Step 5: Solve for x
    x = 79,541,383,253.92/368,628.56
  6. Step 6: Final answer
    x = 215,776.51

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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.