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Finding the Fourth Proportional to 243,622.78, 336,201.93 and 136,198.78

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Solution

The fourth proportional to 243,622.78, 336,201.93 and 136,198.78 is: 187,955.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,622.78 : 336,201.93 = 136,198.78 : x
  2. Step 2: Convert to fraction form
    243,622.78/336,201.93 = 136,198.78/x
  3. Step 3: Cross multiply
    243,622.78x = 336,201.93 × 136,198.78
  4. Step 4: Simplify right side
    243,622.78x = 45,790,292,699.65
  5. Step 5: Solve for x
    x = 45,790,292,699.65/243,622.78
  6. Step 6: Final answer
    x = 187,955.71

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1.5x scale

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.