Home / 378,343.29-522,117.78-208,583.49

Finding the Fourth Proportional to 378,343.29, 522,117.78 and 208,583.49

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Solution

The fourth proportional to 378,343.29, 522,117.78 and 208,583.49 is: 287,847.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,343.29 : 522,117.78 = 208,583.49 : x
  2. Step 2: Convert to fraction form
    378,343.29/522,117.78 = 208,583.49/x
  3. Step 3: Cross multiply
    378,343.29x = 522,117.78 × 208,583.49
  4. Step 4: Simplify right side
    378,343.29x = 108,905,148,743.45
  5. Step 5: Solve for x
    x = 108,905,148,743.45/378,343.29
  6. Step 6: Final answer
    x = 287,847.44

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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.