Home / 378,927.32-522,920.14-209,161.44

Finding the Fourth Proportional to 378,927.32, 522,920.14 and 209,161.44

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Solution

The fourth proportional to 378,927.32, 522,920.14 and 209,161.44 is: 288,643.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,927.32 : 522,920.14 = 209,161.44 : x
  2. Step 2: Convert to fraction form
    378,927.32/522,920.14 = 209,161.44/x
  3. Step 3: Cross multiply
    378,927.32x = 522,920.14 × 209,161.44
  4. Step 4: Simplify right side
    378,927.32x = 109,374,728,964.50
  5. Step 5: Solve for x
    x = 109,374,728,964.50/378,927.32
  6. Step 6: Final answer
    x = 288,643.03

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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.