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Finding the Fourth Proportional to 243,858.93, 336,538.40 and 136,422.56

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Solution

The fourth proportional to 243,858.93, 336,538.40 and 136,422.56 is: 188,270.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,858.93 : 336,538.40 = 136,422.56 : x
  2. Step 2: Convert to fraction form
    243,858.93/336,538.40 = 136,422.56/x
  3. Step 3: Cross multiply
    243,858.93x = 336,538.40 × 136,422.56
  4. Step 4: Simplify right side
    243,858.93x = 45,911,428,042.56
  5. Step 5: Solve for x
    x = 45,911,428,042.56/243,858.93
  6. Step 6: Final answer
    x = 188,270.44

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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.