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Finding the Fourth Proportional to 392,376.02, 541,441.47 and 220,254.56

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Solution

The fourth proportional to 392,376.02, 541,441.47 and 220,254.56 is: 303,930.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,376.02 : 541,441.47 = 220,254.56 : x
  2. Step 2: Convert to fraction form
    392,376.02/541,441.47 = 220,254.56/x
  3. Step 3: Cross multiply
    392,376.02x = 541,441.47 × 220,254.56
  4. Step 4: Simplify right side
    392,376.02x = 119,254,952,740.60
  5. Step 5: Solve for x
    x = 119,254,952,740.60/392,376.02
  6. Step 6: Final answer
    x = 303,930.28

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1.5x scale

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.