Home / 378,445.80-522,246.66-208,680.36

Finding the Fourth Proportional to 378,445.80, 522,246.66 and 208,680.36

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Solution

The fourth proportional to 378,445.80, 522,246.66 and 208,680.36 is: 287,974.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,445.80 : 522,246.66 = 208,680.36 : x
  2. Step 2: Convert to fraction form
    378,445.80/522,246.66 = 208,680.36/x
  3. Step 3: Cross multiply
    378,445.80x = 522,246.66 × 208,680.36
  4. Step 4: Simplify right side
    378,445.80x = 108,982,621,017.60
  5. Step 5: Solve for x
    x = 108,982,621,017.60/378,445.80
  6. Step 6: Final answer
    x = 287,974.19

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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.