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Finding the Fourth Proportional to 328,234.60, 492,351.90 and 221,946.40

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Solution

The fourth proportional to 328,234.60, 492,351.90 and 221,946.40 is: 332,919.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,234.60 : 492,351.90 = 221,946.40 : x
  2. Step 2: Convert to fraction form
    328,234.60/492,351.90 = 221,946.40/x
  3. Step 3: Cross multiply
    328,234.60x = 492,351.90 × 221,946.40
  4. Step 4: Simplify right side
    328,234.60x = 109,275,731,738.16
  5. Step 5: Solve for x
    x = 109,275,731,738.16/328,234.60
  6. Step 6: Final answer
    x = 332,919.60

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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.