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Finding the Fourth Proportional to 201,511.80, 301,830.30 and 166,519.80

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Solution

The fourth proportional to 201,511.80, 301,830.30 and 166,519.80 is: 249,418.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,511.80 : 301,830.30 = 166,519.80 : x
  2. Step 2: Convert to fraction form
    201,511.80/301,830.30 = 166,519.80/x
  3. Step 3: Cross multiply
    201,511.80x = 301,830.30 × 166,519.80
  4. Step 4: Simplify right side
    201,511.80x = 50,260,721,189.94
  5. Step 5: Solve for x
    x = 50,260,721,189.94/201,511.80
  6. Step 6: Final answer
    x = 249,418.25

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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.