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Finding the Fourth Proportional to 381,663.09, 572,429.84 and 101,208.69

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Solution

The fourth proportional to 381,663.09, 572,429.84 and 101,208.69 is: 151,795.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,663.09 : 572,429.84 = 101,208.69 : x
  2. Step 2: Convert to fraction form
    381,663.09/572,429.84 = 101,208.69/x
  3. Step 3: Cross multiply
    381,663.09x = 572,429.84 × 101,208.69
  4. Step 4: Simplify right side
    381,663.09x = 57,934,873,717.27
  5. Step 5: Solve for x
    x = 57,934,873,717.27/381,663.09
  6. Step 6: Final answer
    x = 151,795.85

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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.