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Finding the Fourth Proportional to 215,805.40, 323,801.39 and 115,848.87

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Solution

The fourth proportional to 215,805.40, 323,801.39 and 115,848.87 is: 173,823.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,805.40 : 323,801.39 = 115,848.87 : x
  2. Step 2: Convert to fraction form
    215,805.40/323,801.39 = 115,848.87/x
  3. Step 3: Cross multiply
    215,805.40x = 323,801.39 × 115,848.87
  4. Step 4: Simplify right side
    215,805.40x = 37,512,025,135.93
  5. Step 5: Solve for x
    x = 37,512,025,135.93/215,805.40
  6. Step 6: Final answer
    x = 173,823.39

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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.