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Finding the Fourth Proportional to 515,383.38, 773,377.61 and 215,840.93

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Solution

The fourth proportional to 515,383.38, 773,377.61 and 215,840.93 is: 323,888.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,383.38 : 773,377.61 = 215,840.93 : x
  2. Step 2: Convert to fraction form
    515,383.38/773,377.61 = 215,840.93/x
  3. Step 3: Cross multiply
    515,383.38x = 773,377.61 × 215,840.93
  4. Step 4: Simplify right side
    515,383.38x = 166,926,537,637.49
  5. Step 5: Solve for x
    x = 166,926,537,637.49/515,383.38
  6. Step 6: Final answer
    x = 323,888.09

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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.