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Finding the Fourth Proportional to 243,791.61, 336,433.28 and 136,354.77

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Solution

The fourth proportional to 243,791.61, 336,433.28 and 136,354.77 is: 188,170.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,791.61 : 336,433.28 = 136,354.77 : x
  2. Step 2: Convert to fraction form
    243,791.61/336,433.28 = 136,354.77/x
  3. Step 3: Cross multiply
    243,791.61x = 336,433.28 × 136,354.77
  4. Step 4: Simplify right side
    243,791.61x = 45,874,281,832.97
  5. Step 5: Solve for x
    x = 45,874,281,832.97/243,791.61
  6. Step 6: Final answer
    x = 188,170.06

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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.