Home / 378,216.36-521,937-208,450.08

Finding the Fourth Proportional to 378,216.36, 521,937 and 208,450.08

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Solution

The fourth proportional to 378,216.36, 521,937 and 208,450.08 is: 287,660.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,216.36 : 521,937 = 208,450.08 : x
  2. Step 2: Convert to fraction form
    378,216.36/521,937 = 208,450.08/x
  3. Step 3: Cross multiply
    378,216.36x = 521,937 × 208,450.08
  4. Step 4: Simplify right side
    378,216.36x = 108,797,809,404.96
  5. Step 5: Solve for x
    x = 108,797,809,404.96/378,216.36
  6. Step 6: Final answer
    x = 287,660.24

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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.