Home / 378,867.96-522,835.20-209,102.07

Finding the Fourth Proportional to 378,867.96, 522,835.20 and 209,102.07

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Solution

The fourth proportional to 378,867.96, 522,835.20 and 209,102.07 is: 288,559.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,867.96 : 522,835.20 = 209,102.07 : x
  2. Step 2: Convert to fraction form
    378,867.96/522,835.20 = 209,102.07/x
  3. Step 3: Cross multiply
    378,867.96x = 522,835.20 × 209,102.07
  4. Step 4: Simplify right side
    378,867.96x = 109,325,922,588.86
  5. Step 5: Solve for x
    x = 109,325,922,588.86/378,867.96
  6. Step 6: Final answer
    x = 288,559.43

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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.