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Finding the Fourth Proportional to 228,947.80, 343,421.70 and 203,578.60

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Solution

The fourth proportional to 228,947.80, 343,421.70 and 203,578.60 is: 305,367.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,947.80 : 343,421.70 = 203,578.60 : x
  2. Step 2: Convert to fraction form
    228,947.80/343,421.70 = 203,578.60/x
  3. Step 3: Cross multiply
    228,947.80x = 343,421.70 × 203,578.60
  4. Step 4: Simplify right side
    228,947.80x = 69,913,308,895.62
  5. Step 5: Solve for x
    x = 69,913,308,895.62/228,947.80
  6. Step 6: Final answer
    x = 305,367.90

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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.