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Finding the Fourth Proportional to 253,274.56, 379,912.55 and 103,514.87

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Solution

The fourth proportional to 253,274.56, 379,912.55 and 103,514.87 is: 155,272.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,274.56 : 379,912.55 = 103,514.87 : x
  2. Step 2: Convert to fraction form
    253,274.56/379,912.55 = 103,514.87/x
  3. Step 3: Cross multiply
    253,274.56x = 379,912.55 × 103,514.87
  4. Step 4: Simplify right side
    253,274.56x = 39,326,598,656.83
  5. Step 5: Solve for x
    x = 39,326,598,656.83/253,274.56
  6. Step 6: Final answer
    x = 155,272.60

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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.