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Finding the Fourth Proportional to 228,853.80, 343,280.70 and 208,578.60

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Solution

The fourth proportional to 228,853.80, 343,280.70 and 208,578.60 is: 312,867.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,853.80 : 343,280.70 = 208,578.60 : x
  2. Step 2: Convert to fraction form
    228,853.80/343,280.70 = 208,578.60/x
  3. Step 3: Cross multiply
    228,853.80x = 343,280.70 × 208,578.60
  4. Step 4: Simplify right side
    228,853.80x = 71,601,007,813.02
  5. Step 5: Solve for x
    x = 71,601,007,813.02/228,853.80
  6. Step 6: Final answer
    x = 312,867.90

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1.5x scale

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.