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Finding the Fourth Proportional to 253,189.80, 379,806.38 and 66,201

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Solution

The fourth proportional to 253,189.80, 379,806.38 and 66,201 is: 99,307.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,189.80 : 379,806.38 = 66,201 : x
  2. Step 2: Convert to fraction form
    253,189.80/379,806.38 = 66,201/x
  3. Step 3: Cross multiply
    253,189.80x = 379,806.38 × 66,201
  4. Step 4: Simplify right side
    253,189.80x = 25,143,562,162.38
  5. Step 5: Solve for x
    x = 25,143,562,162.38/253,189.80
  6. Step 6: Final answer
    x = 99,307.17

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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.