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Finding the Fourth Proportional to 247,394.61, 371,152.36 and 78,914.96

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Solution

The fourth proportional to 247,394.61, 371,152.36 and 78,914.96 is: 118,391.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,394.61 : 371,152.36 = 78,914.96 : x
  2. Step 2: Convert to fraction form
    247,394.61/371,152.36 = 78,914.96/x
  3. Step 3: Cross multiply
    247,394.61x = 371,152.36 × 78,914.96
  4. Step 4: Simplify right side
    247,394.61x = 29,289,475,365.74
  5. Step 5: Solve for x
    x = 29,289,475,365.74/247,394.61
  6. Step 6: Final answer
    x = 118,391.73

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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.