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Finding the Fourth Proportional to 392,120.94, 541,125.37 and 220,038.51

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Solution

The fourth proportional to 392,120.94, 541,125.37 and 220,038.51 is: 303,652.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,120.94 : 541,125.37 = 220,038.51 : x
  2. Step 2: Convert to fraction form
    392,120.94/541,125.37 = 220,038.51/x
  3. Step 3: Cross multiply
    392,120.94x = 541,125.37 × 220,038.51
  4. Step 4: Simplify right side
    392,120.94x = 119,068,420,138.00
  5. Step 5: Solve for x
    x = 119,068,420,138.00/392,120.94
  6. Step 6: Final answer
    x = 303,652.29

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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.