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Finding the Fourth Proportional to 247,290.22, 370,962.60 and 78,771.34

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Solution

The fourth proportional to 247,290.22, 370,962.60 and 78,771.34 is: 118,165.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,290.22 : 370,962.60 = 78,771.34 : x
  2. Step 2: Convert to fraction form
    247,290.22/370,962.60 = 78,771.34/x
  3. Step 3: Cross multiply
    247,290.22x = 370,962.60 × 78,771.34
  4. Step 4: Simplify right side
    247,290.22x = 29,221,221,091.88
  5. Step 5: Solve for x
    x = 29,221,221,091.88/247,290.22
  6. Step 6: Final answer
    x = 118,165.70

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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.