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Finding the Fourth Proportional to 228,466.60, 342,662.10 and 76,661.80

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Solution

The fourth proportional to 228,466.60, 342,662.10 and 76,661.80 is: 114,980.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,466.60 : 342,662.10 = 76,661.80 : x
  2. Step 2: Convert to fraction form
    228,466.60/342,662.10 = 76,661.80/x
  3. Step 3: Cross multiply
    228,466.60x = 342,662.10 × 76,661.80
  4. Step 4: Simplify right side
    228,466.60x = 26,269,093,377.78
  5. Step 5: Solve for x
    x = 26,269,093,377.78/228,466.60
  6. Step 6: Final answer
    x = 114,980.02

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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.