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Finding the Fourth Proportional to 378,332.73, 522,102.66 and 208,572.93

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Solution

The fourth proportional to 378,332.73, 522,102.66 and 208,572.93 is: 287,832.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,332.73 : 522,102.66 = 208,572.93 : x
  2. Step 2: Convert to fraction form
    378,332.73/522,102.66 = 208,572.93/x
  3. Step 3: Cross multiply
    378,332.73x = 522,102.66 × 208,572.93
  4. Step 4: Simplify right side
    378,332.73x = 108,896,481,556.99
  5. Step 5: Solve for x
    x = 108,896,481,556.99/378,332.73
  6. Step 6: Final answer
    x = 287,832.57

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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.