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Finding the Fourth Proportional to 243,469.71, 335,987.48 and 136,039.82

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Solution

The fourth proportional to 243,469.71, 335,987.48 and 136,039.82 is: 187,734.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,469.71 : 335,987.48 = 136,039.82 : x
  2. Step 2: Convert to fraction form
    243,469.71/335,987.48 = 136,039.82/x
  3. Step 3: Cross multiply
    243,469.71x = 335,987.48 × 136,039.82
  4. Step 4: Simplify right side
    243,469.71x = 45,707,674,961.62
  5. Step 5: Solve for x
    x = 45,707,674,961.62/243,469.71
  6. Step 6: Final answer
    x = 187,734.54

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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.