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Finding the Fourth Proportional to 228,668.20, 343,002.30 and 70,912.60

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Solution

The fourth proportional to 228,668.20, 343,002.30 and 70,912.60 is: 106,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,668.20 : 343,002.30 = 70,912.60 : x
  2. Step 2: Convert to fraction form
    228,668.20/343,002.30 = 70,912.60/x
  3. Step 3: Cross multiply
    228,668.20x = 343,002.30 × 70,912.60
  4. Step 4: Simplify right side
    228,668.20x = 24,323,184,898.98
  5. Step 5: Solve for x
    x = 24,323,184,898.98/228,668.20
  6. Step 6: Final answer
    x = 106,368.90

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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.