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Finding the Fourth Proportional to 368,318.54, 552,255.60 and 140,629.03

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Solution

The fourth proportional to 368,318.54, 552,255.60 and 140,629.03 is: 210,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,318.54 : 552,255.60 = 140,629.03 : x
  2. Step 2: Convert to fraction form
    368,318.54/552,255.60 = 140,629.03/x
  3. Step 3: Cross multiply
    368,318.54x = 552,255.60 × 140,629.03
  4. Step 4: Simplify right side
    368,318.54x = 77,663,169,340.07
  5. Step 5: Solve for x
    x = 77,663,169,340.07/368,318.54
  6. Step 6: Final answer
    x = 210,858.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.