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Finding the Fourth Proportional to 325,999.20, 489,241.80 and 168,146.40

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Solution

The fourth proportional to 325,999.20, 489,241.80 and 168,146.40 is: 252,344.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,999.20 : 489,241.80 = 168,146.40 : x
  2. Step 2: Convert to fraction form
    325,999.20/489,241.80 = 168,146.40/x
  3. Step 3: Cross multiply
    325,999.20x = 489,241.80 × 168,146.40
  4. Step 4: Simplify right side
    325,999.20x = 82,264,247,399.52
  5. Step 5: Solve for x
    x = 82,264,247,399.52/325,999.20
  6. Step 6: Final answer
    x = 252,344.94

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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.