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Finding the Fourth Proportional to 392,709.60, 541,941.41 and 220,634.82

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Solution

The fourth proportional to 392,709.60, 541,941.41 and 220,634.82 is: 304,477.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,709.60 : 541,941.41 = 220,634.82 : x
  2. Step 2: Convert to fraction form
    392,709.60/541,941.41 = 220,634.82/x
  3. Step 3: Cross multiply
    392,709.60x = 541,941.41 × 220,634.82
  4. Step 4: Simplify right side
    392,709.60x = 119,571,145,445.90
  5. Step 5: Solve for x
    x = 119,571,145,445.90/392,709.60
  6. Step 6: Final answer
    x = 304,477.27

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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.