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Finding the Fourth Proportional to 247,161.78, 341,094.64 and 139,736.34

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Solution

The fourth proportional to 247,161.78, 341,094.64 and 139,736.34 is: 192,842.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,161.78 : 341,094.64 = 139,736.34 : x
  2. Step 2: Convert to fraction form
    247,161.78/341,094.64 = 139,736.34/x
  3. Step 3: Cross multiply
    247,161.78x = 341,094.64 × 139,736.34
  4. Step 4: Simplify right side
    247,161.78x = 47,663,316,587.22
  5. Step 5: Solve for x
    x = 47,663,316,587.22/247,161.78
  6. Step 6: Final answer
    x = 192,842.59

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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.