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Finding the Fourth Proportional to 501,242.56, 691,715.64 and 274,889.68

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Solution

The fourth proportional to 501,242.56, 691,715.64 and 274,889.68 is: 379,348.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,242.56 : 691,715.64 = 274,889.68 : x
  2. Step 2: Convert to fraction form
    501,242.56/691,715.64 = 274,889.68/x
  3. Step 3: Cross multiply
    501,242.56x = 691,715.64 × 274,889.68
  4. Step 4: Simplify right side
    501,242.56x = 190,145,490,930.60
  5. Step 5: Solve for x
    x = 190,145,490,930.60/501,242.56
  6. Step 6: Final answer
    x = 379,348.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.