Home / 378,739.50-522,671.45-208,984.56

Finding the Fourth Proportional to 378,739.50, 522,671.45 and 208,984.56

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Solution

The fourth proportional to 378,739.50, 522,671.45 and 208,984.56 is: 288,404.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,739.50 : 522,671.45 = 208,984.56 : x
  2. Step 2: Convert to fraction form
    378,739.50/522,671.45 = 208,984.56/x
  3. Step 3: Cross multiply
    378,739.50x = 522,671.45 × 208,984.56
  4. Step 4: Simplify right side
    378,739.50x = 109,230,261,957.89
  5. Step 5: Solve for x
    x = 109,230,261,957.89/378,739.50
  6. Step 6: Final answer
    x = 288,404.73

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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.