Home / 378,555.84-522,403.20-208,791.36

Finding the Fourth Proportional to 378,555.84, 522,403.20 and 208,791.36

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Solution

The fourth proportional to 378,555.84, 522,403.20 and 208,791.36 is: 288,129.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,555.84 : 522,403.20 = 208,791.36 : x
  2. Step 2: Convert to fraction form
    378,555.84/522,403.20 = 208,791.36/x
  3. Step 3: Cross multiply
    378,555.84x = 522,403.20 × 208,791.36
  4. Step 4: Simplify right side
    378,555.84x = 109,073,274,596.35
  5. Step 5: Solve for x
    x = 109,073,274,596.35/378,555.84
  6. Step 6: Final answer
    x = 288,129.95

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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.