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Finding the Fourth Proportional to 243,048.35, 335,356.64 and 139,662.57

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Solution

The fourth proportional to 243,048.35, 335,356.64 and 139,662.57 is: 192,705.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,048.35 : 335,356.64 = 139,662.57 : x
  2. Step 2: Convert to fraction form
    243,048.35/335,356.64 = 139,662.57/x
  3. Step 3: Cross multiply
    243,048.35x = 335,356.64 × 139,662.57
  4. Step 4: Simplify right side
    243,048.35x = 46,836,770,558.12
  5. Step 5: Solve for x
    x = 46,836,770,558.12/243,048.35
  6. Step 6: Final answer
    x = 192,705.57

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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.