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Finding the Fourth Proportional to 398,731.77, 550,237.53 and 226,668.54

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Solution

The fourth proportional to 398,731.77, 550,237.53 and 226,668.54 is: 312,795.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,731.77 : 550,237.53 = 226,668.54 : x
  2. Step 2: Convert to fraction form
    398,731.77/550,237.53 = 226,668.54/x
  3. Step 3: Cross multiply
    398,731.77x = 550,237.53 × 226,668.54
  4. Step 4: Simplify right side
    398,731.77x = 124,721,537,578.31
  5. Step 5: Solve for x
    x = 124,721,537,578.31/398,731.77
  6. Step 6: Final answer
    x = 312,795.59

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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.