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Finding the Fourth Proportional to 243,993.78, 336,717.45 and 136,562.94

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Solution

The fourth proportional to 243,993.78, 336,717.45 and 136,562.94 is: 188,460.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,993.78 : 336,717.45 = 136,562.94 : x
  2. Step 2: Convert to fraction form
    243,993.78/336,717.45 = 136,562.94/x
  3. Step 3: Cross multiply
    243,993.78x = 336,717.45 × 136,562.94
  4. Step 4: Simplify right side
    243,993.78x = 45,983,124,921.30
  5. Step 5: Solve for x
    x = 45,983,124,921.30/243,993.78
  6. Step 6: Final answer
    x = 188,460.23

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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.