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Finding the Fourth Proportional to 368,664.79, 508,757.53 and 215,732.38

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Solution

The fourth proportional to 368,664.79, 508,757.53 and 215,732.38 is: 297,710.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,664.79 : 508,757.53 = 215,732.38 : x
  2. Step 2: Convert to fraction form
    368,664.79/508,757.53 = 215,732.38/x
  3. Step 3: Cross multiply
    368,664.79x = 508,757.53 × 215,732.38
  4. Step 4: Simplify right side
    368,664.79x = 109,755,472,789.82
  5. Step 5: Solve for x
    x = 109,755,472,789.82/368,664.79
  6. Step 6: Final answer
    x = 297,710.75

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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.