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Finding the Fourth Proportional to 372,978.54, 514,696.68 and 203,209.02

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Solution

The fourth proportional to 372,978.54, 514,696.68 and 203,209.02 is: 280,420.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,978.54 : 514,696.68 = 203,209.02 : x
  2. Step 2: Convert to fraction form
    372,978.54/514,696.68 = 203,209.02/x
  3. Step 3: Cross multiply
    372,978.54x = 514,696.68 × 203,209.02
  4. Step 4: Simplify right side
    372,978.54x = 104,591,007,940.05
  5. Step 5: Solve for x
    x = 104,591,007,940.05/372,978.54
  6. Step 6: Final answer
    x = 280,420.98

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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.