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Finding the Fourth Proportional to 376,007.45, 518,956.62 and 223,129.94

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Solution

The fourth proportional to 376,007.45, 518,956.62 and 223,129.94 is: 307,958.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,007.45 : 518,956.62 = 223,129.94 : x
  2. Step 2: Convert to fraction form
    376,007.45/518,956.62 = 223,129.94/x
  3. Step 3: Cross multiply
    376,007.45x = 518,956.62 × 223,129.94
  4. Step 4: Simplify right side
    376,007.45x = 115,794,756,888.42
  5. Step 5: Solve for x
    x = 115,794,756,888.42/376,007.45
  6. Step 6: Final answer
    x = 307,958.68

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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.