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Finding the Fourth Proportional to 248,597.57, 343,039.08 and 139,684.61

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Solution

The fourth proportional to 248,597.57, 343,039.08 and 139,684.61 is: 192,750.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,597.57 : 343,039.08 = 139,684.61 : x
  2. Step 2: Convert to fraction form
    248,597.57/343,039.08 = 139,684.61/x
  3. Step 3: Cross multiply
    248,597.57x = 343,039.08 × 139,684.61
  4. Step 4: Simplify right side
    248,597.57x = 47,917,280,104.56
  5. Step 5: Solve for x
    x = 47,917,280,104.56/248,597.57
  6. Step 6: Final answer
    x = 192,750.40

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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.