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Finding the Fourth Proportional to 372,969.20, 514,703.40 and 203,203.28

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Solution

The fourth proportional to 372,969.20, 514,703.40 and 203,203.28 is: 280,423.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,969.20 : 514,703.40 = 203,203.28 : x
  2. Step 2: Convert to fraction form
    372,969.20/514,703.40 = 203,203.28/x
  3. Step 3: Cross multiply
    372,969.20x = 514,703.40 × 203,203.28
  4. Step 4: Simplify right side
    372,969.20x = 104,589,419,107.15
  5. Step 5: Solve for x
    x = 104,589,419,107.15/372,969.20
  6. Step 6: Final answer
    x = 280,423.74

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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.