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Finding the Fourth Proportional to 531,220, 733,083.60 and 292,756

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Solution

The fourth proportional to 531,220, 733,083.60 and 292,756 is: 404,003.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,220 : 733,083.60 = 292,756 : x
  2. Step 2: Convert to fraction form
    531,220/733,083.60 = 292,756/x
  3. Step 3: Cross multiply
    531,220x = 733,083.60 × 292,756
  4. Step 4: Simplify right side
    531,220x = 214,614,622,401.60
  5. Step 5: Solve for x
    x = 214,614,622,401.60/531,220
  6. Step 6: Final answer
    x = 404,003.28

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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.