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Finding the Fourth Proportional to 378,926.57, 568,055.43 and 154,474.76

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Solution

The fourth proportional to 378,926.57, 568,055.43 and 154,474.76 is: 231,575.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,926.57 : 568,055.43 = 154,474.76 : x
  2. Step 2: Convert to fraction form
    378,926.57/568,055.43 = 154,474.76/x
  3. Step 3: Cross multiply
    378,926.57x = 568,055.43 × 154,474.76
  4. Step 4: Simplify right side
    378,926.57x = 87,750,227,636.09
  5. Step 5: Solve for x
    x = 87,750,227,636.09/378,926.57
  6. Step 6: Final answer
    x = 231,575.81

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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.