Home / 378,394.04-522,187.30-208,634.20

Finding the Fourth Proportional to 378,394.04, 522,187.30 and 208,634.20

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Solution

The fourth proportional to 378,394.04, 522,187.30 and 208,634.20 is: 287,917.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,394.04 : 522,187.30 = 208,634.20 : x
  2. Step 2: Convert to fraction form
    378,394.04/522,187.30 = 208,634.20/x
  3. Step 3: Cross multiply
    378,394.04x = 522,187.30 × 208,634.20
  4. Step 4: Simplify right side
    378,394.04x = 108,946,129,585.66
  5. Step 5: Solve for x
    x = 108,946,129,585.66/378,394.04
  6. Step 6: Final answer
    x = 287,917.14

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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.