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Finding the Fourth Proportional to 522,674.47, 721,203.33 and 307,857.31

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Solution

The fourth proportional to 522,674.47, 721,203.33 and 307,857.31 is: 424,791.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,674.47 : 721,203.33 = 307,857.31 : x
  2. Step 2: Convert to fraction form
    522,674.47/721,203.33 = 307,857.31/x
  3. Step 3: Cross multiply
    522,674.47x = 721,203.33 × 307,857.31
  4. Step 4: Simplify right side
    522,674.47x = 222,027,715,333.83
  5. Step 5: Solve for x
    x = 222,027,715,333.83/522,674.47
  6. Step 6: Final answer
    x = 424,791.58

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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.