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Finding the Fourth Proportional to 330,394.26, 492,094.43 and 328,783.26

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Solution

The fourth proportional to 330,394.26, 492,094.43 and 328,783.26 is: 489,694.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,394.26 : 492,094.43 = 328,783.26 : x
  2. Step 2: Convert to fraction form
    330,394.26/492,094.43 = 328,783.26/x
  3. Step 3: Cross multiply
    330,394.26x = 492,094.43 × 328,783.26
  4. Step 4: Simplify right side
    330,394.26x = 161,792,409,279.33
  5. Step 5: Solve for x
    x = 161,792,409,279.33/330,394.26
  6. Step 6: Final answer
    x = 489,694.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.