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Finding the Fourth Proportional to 247,394.17, 371,072.58 and 78,907.69

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Solution

The fourth proportional to 247,394.17, 371,072.58 and 78,907.69 is: 118,355.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,394.17 : 371,072.58 = 78,907.69 : x
  2. Step 2: Convert to fraction form
    247,394.17/371,072.58 = 78,907.69/x
  3. Step 3: Cross multiply
    247,394.17x = 371,072.58 × 78,907.69
  4. Step 4: Simplify right side
    247,394.17x = 29,280,480,110.14
  5. Step 5: Solve for x
    x = 29,280,480,110.14/247,394.17
  6. Step 6: Final answer
    x = 118,355.58

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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.