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Finding the Fourth Proportional to 215,301, 297,115.38 and 121,093

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Solution

The fourth proportional to 215,301, 297,115.38 and 121,093 is: 167,108.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,301 : 297,115.38 = 121,093 : x
  2. Step 2: Convert to fraction form
    215,301/297,115.38 = 121,093/x
  3. Step 3: Cross multiply
    215,301x = 297,115.38 × 121,093
  4. Step 4: Simplify right side
    215,301x = 35,978,592,710.34
  5. Step 5: Solve for x
    x = 35,978,592,710.34/215,301
  6. Step 6: Final answer
    x = 167,108.34

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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.