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Finding the Fourth Proportional to 381,297.78, 571,950.72 and 115,060.64

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Solution

The fourth proportional to 381,297.78, 571,950.72 and 115,060.64 is: 172,592.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,297.78 : 571,950.72 = 115,060.64 : x
  2. Step 2: Convert to fraction form
    381,297.78/571,950.72 = 115,060.64/x
  3. Step 3: Cross multiply
    381,297.78x = 571,950.72 × 115,060.64
  4. Step 4: Simplify right side
    381,297.78x = 65,809,013,031.91
  5. Step 5: Solve for x
    x = 65,809,013,031.91/381,297.78
  6. Step 6: Final answer
    x = 172,592.17

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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.