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Finding the Fourth Proportional to 328,095.20, 492,142.80 and 326,021.60

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Solution

The fourth proportional to 328,095.20, 492,142.80 and 326,021.60 is: 489,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,095.20 : 492,142.80 = 326,021.60 : x
  2. Step 2: Convert to fraction form
    328,095.20/492,142.80 = 326,021.60/x
  3. Step 3: Cross multiply
    328,095.20x = 492,142.80 × 326,021.60
  4. Step 4: Simplify right side
    328,095.20x = 160,449,183,084.48
  5. Step 5: Solve for x
    x = 160,449,183,084.48/328,095.20
  6. Step 6: Final answer
    x = 489,032.40

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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.