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Finding the Fourth Proportional to 455,540.80, 683,311.20 and 306,241.60

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Solution

The fourth proportional to 455,540.80, 683,311.20 and 306,241.60 is: 459,362.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,540.80 : 683,311.20 = 306,241.60 : x
  2. Step 2: Convert to fraction form
    455,540.80/683,311.20 = 306,241.60/x
  3. Step 3: Cross multiply
    455,540.80x = 683,311.20 × 306,241.60
  4. Step 4: Simplify right side
    455,540.80x = 209,258,315,185.92
  5. Step 5: Solve for x
    x = 209,258,315,185.92/455,540.80
  6. Step 6: Final answer
    x = 459,362.40

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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.