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Finding the Fourth Proportional to 392,403.42, 541,500.39 and 222,646.86

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Solution

The fourth proportional to 392,403.42, 541,500.39 and 222,646.86 is: 307,243.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,403.42 : 541,500.39 = 222,646.86 : x
  2. Step 2: Convert to fraction form
    392,403.42/541,500.39 = 222,646.86/x
  3. Step 3: Cross multiply
    392,403.42x = 541,500.39 × 222,646.86
  4. Step 4: Simplify right side
    392,403.42x = 120,563,361,522.28
  5. Step 5: Solve for x
    x = 120,563,361,522.28/392,403.42
  6. Step 6: Final answer
    x = 307,243.40

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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.