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Finding the Fourth Proportional to 243,476.93, 335,991.64 and 136,047.85

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Solution

The fourth proportional to 243,476.93, 335,991.64 and 136,047.85 is: 187,742.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,476.93 : 335,991.64 = 136,047.85 : x
  2. Step 2: Convert to fraction form
    243,476.93/335,991.64 = 136,047.85/x
  3. Step 3: Cross multiply
    243,476.93x = 335,991.64 × 136,047.85
  4. Step 4: Simplify right side
    243,476.93x = 45,710,940,239.97
  5. Step 5: Solve for x
    x = 45,710,940,239.97/243,476.93
  6. Step 6: Final answer
    x = 187,742.39

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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.