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Finding the Fourth Proportional to 398,733.78, 550,240.28 and 226,670.54

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Solution

The fourth proportional to 398,733.78, 550,240.28 and 226,670.54 is: 312,798.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,733.78 : 550,240.28 = 226,670.54 : x
  2. Step 2: Convert to fraction form
    398,733.78/550,240.28 = 226,670.54/x
  3. Step 3: Cross multiply
    398,733.78x = 550,240.28 × 226,670.54
  4. Step 4: Simplify right side
    398,733.78x = 124,723,261,397.35
  5. Step 5: Solve for x
    x = 124,723,261,397.35/398,733.78
  6. Step 6: Final answer
    x = 312,798.33

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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.