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Finding the Fourth Proportional to 228,876.80, 343,315.20 and 208,601.60

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Solution

The fourth proportional to 228,876.80, 343,315.20 and 208,601.60 is: 312,902.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,876.80 : 343,315.20 = 208,601.60 : x
  2. Step 2: Convert to fraction form
    228,876.80/343,315.20 = 208,601.60/x
  3. Step 3: Cross multiply
    228,876.80x = 343,315.20 × 208,601.60
  4. Step 4: Simplify right side
    228,876.80x = 71,616,100,024.32
  5. Step 5: Solve for x
    x = 71,616,100,024.32/228,876.80
  6. Step 6: Final answer
    x = 312,902.40

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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.