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Finding the Fourth Proportional to 247,188.40, 370,779 and 78,706.78

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Solution

The fourth proportional to 247,188.40, 370,779 and 78,706.78 is: 118,059.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,188.40 : 370,779 = 78,706.78 : x
  2. Step 2: Convert to fraction form
    247,188.40/370,779 = 78,706.78/x
  3. Step 3: Cross multiply
    247,188.40x = 370,779 × 78,706.78
  4. Step 4: Simplify right side
    247,188.40x = 29,182,821,181.62
  5. Step 5: Solve for x
    x = 29,182,821,181.62/247,188.40
  6. Step 6: Final answer
    x = 118,059.02

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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.