Home / 378,742.23-522,675.18-208,987.29

Finding the Fourth Proportional to 378,742.23, 522,675.18 and 208,987.29

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Solution

The fourth proportional to 378,742.23, 522,675.18 and 208,987.29 is: 288,408.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,742.23 : 522,675.18 = 208,987.29 : x
  2. Step 2: Convert to fraction form
    378,742.23/522,675.18 = 208,987.29/x
  3. Step 3: Cross multiply
    378,742.23x = 522,675.18 × 208,987.29
  4. Step 4: Simplify right side
    378,742.23x = 109,232,469,418.46
  5. Step 5: Solve for x
    x = 109,232,469,418.46/378,742.23
  6. Step 6: Final answer
    x = 288,408.48

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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.