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Finding the Fourth Proportional to 515,612.73, 773,456.36 and 215,791.64

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Solution

The fourth proportional to 515,612.73, 773,456.36 and 215,791.64 is: 323,703.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,612.73 : 773,456.36 = 215,791.64 : x
  2. Step 2: Convert to fraction form
    515,612.73/773,456.36 = 215,791.64/x
  3. Step 3: Cross multiply
    515,612.73x = 773,456.36 × 215,791.64
  4. Step 4: Simplify right side
    515,612.73x = 166,905,411,446.59
  5. Step 5: Solve for x
    x = 166,905,411,446.59/515,612.73
  6. Step 6: Final answer
    x = 323,703.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.