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Finding the Fourth Proportional to 247,678.88, 371,469.96 and 79,154

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Solution

The fourth proportional to 247,678.88, 371,469.96 and 79,154 is: 118,715.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,678.88 : 371,469.96 = 79,154 : x
  2. Step 2: Convert to fraction form
    247,678.88/371,469.96 = 79,154/x
  3. Step 3: Cross multiply
    247,678.88x = 371,469.96 × 79,154
  4. Step 4: Simplify right side
    247,678.88x = 29,403,333,213.84
  5. Step 5: Solve for x
    x = 29,403,333,213.84/247,678.88
  6. Step 6: Final answer
    x = 118,715.54

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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.