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Finding the Fourth Proportional to 253,333.48, 379,860 and 103,678.96

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Solution

The fourth proportional to 253,333.48, 379,860 and 103,678.96 is: 155,461.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,333.48 : 379,860 = 103,678.96 : x
  2. Step 2: Convert to fraction form
    253,333.48/379,860 = 103,678.96/x
  3. Step 3: Cross multiply
    253,333.48x = 379,860 × 103,678.96
  4. Step 4: Simplify right side
    253,333.48x = 39,383,489,745.60
  5. Step 5: Solve for x
    x = 39,383,489,745.60/253,333.48
  6. Step 6: Final answer
    x = 155,461.05

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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.