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Finding the Fourth Proportional to 228,376.20, 342,564.30 and 217,489.80

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Solution

The fourth proportional to 228,376.20, 342,564.30 and 217,489.80 is: 326,234.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,376.20 : 342,564.30 = 217,489.80 : x
  2. Step 2: Convert to fraction form
    228,376.20/342,564.30 = 217,489.80/x
  3. Step 3: Cross multiply
    228,376.20x = 342,564.30 × 217,489.80
  4. Step 4: Simplify right side
    228,376.20x = 74,504,241,094.14
  5. Step 5: Solve for x
    x = 74,504,241,094.14/228,376.20
  6. Step 6: Final answer
    x = 326,234.70

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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.