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Finding the Fourth Proportional to 286,351.18, 395,362.32 and 178,969.48

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Solution

The fourth proportional to 286,351.18, 395,362.32 and 178,969.48 is: 247,101.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,351.18 : 395,362.32 = 178,969.48 : x
  2. Step 2: Convert to fraction form
    286,351.18/395,362.32 = 178,969.48/x
  3. Step 3: Cross multiply
    286,351.18x = 395,362.32 × 178,969.48
  4. Step 4: Simplify right side
    286,351.18x = 70,757,788,821.99
  5. Step 5: Solve for x
    x = 70,757,788,821.99/286,351.18
  6. Step 6: Final answer
    x = 247,101.44

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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.