Home / 378,069.75-521,736.30-208,307.52

Finding the Fourth Proportional to 378,069.75, 521,736.30 and 208,307.52

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Solution

The fourth proportional to 378,069.75, 521,736.30 and 208,307.52 is: 287,464.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,069.75 : 521,736.30 = 208,307.52 : x
  2. Step 2: Convert to fraction form
    378,069.75/521,736.30 = 208,307.52/x
  3. Step 3: Cross multiply
    378,069.75x = 521,736.30 × 208,307.52
  4. Step 4: Simplify right side
    378,069.75x = 108,681,594,746.98
  5. Step 5: Solve for x
    x = 108,681,594,746.98/378,069.75
  6. Step 6: Final answer
    x = 287,464.40

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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.