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Finding the Fourth Proportional to 368,328.72, 508,338.60 and 207,190.56

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Solution

The fourth proportional to 368,328.72, 508,338.60 and 207,190.56 is: 285,948.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,328.72 : 508,338.60 = 207,190.56 : x
  2. Step 2: Convert to fraction form
    368,328.72/508,338.60 = 207,190.56/x
  3. Step 3: Cross multiply
    368,328.72x = 508,338.60 × 207,190.56
  4. Step 4: Simplify right side
    368,328.72x = 105,322,959,203.62
  5. Step 5: Solve for x
    x = 105,322,959,203.62/368,328.72
  6. Step 6: Final answer
    x = 285,948.27

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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.