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Finding the Fourth Proportional to 381,243.36, 526,060.08 and 220,072.80

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Solution

The fourth proportional to 381,243.36, 526,060.08 and 220,072.80 is: 303,668.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,243.36 : 526,060.08 = 220,072.80 : x
  2. Step 2: Convert to fraction form
    381,243.36/526,060.08 = 220,072.80/x
  3. Step 3: Cross multiply
    381,243.36x = 526,060.08 × 220,072.80
  4. Step 4: Simplify right side
    381,243.36x = 115,771,514,773.82
  5. Step 5: Solve for x
    x = 115,771,514,773.82/381,243.36
  6. Step 6: Final answer
    x = 303,668.28

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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.