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Finding the Fourth Proportional to 253,010.34, 379,515.33 and 66,021.84

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Solution

The fourth proportional to 253,010.34, 379,515.33 and 66,021.84 is: 99,032.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,010.34 : 379,515.33 = 66,021.84 : x
  2. Step 2: Convert to fraction form
    253,010.34/379,515.33 = 66,021.84/x
  3. Step 3: Cross multiply
    253,010.34x = 379,515.33 × 66,021.84
  4. Step 4: Simplify right side
    253,010.34x = 25,056,300,394.81
  5. Step 5: Solve for x
    x = 25,056,300,394.81/253,010.34
  6. Step 6: Final answer
    x = 99,032.71

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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.