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Finding the Fourth Proportional to 515,556.59, 773,326.37 and 211,889.21

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Solution

The fourth proportional to 515,556.59, 773,326.37 and 211,889.21 is: 317,830.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,556.59 : 773,326.37 = 211,889.21 : x
  2. Step 2: Convert to fraction form
    515,556.59/773,326.37 = 211,889.21/x
  3. Step 3: Cross multiply
    515,556.59x = 773,326.37 × 211,889.21
  4. Step 4: Simplify right side
    515,556.59x = 163,859,508,685.39
  5. Step 5: Solve for x
    x = 163,859,508,685.39/515,556.59
  6. Step 6: Final answer
    x = 317,830.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.