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Finding the Fourth Proportional to 325,850.40, 488,775.60 and 280,749.60

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Solution

The fourth proportional to 325,850.40, 488,775.60 and 280,749.60 is: 421,124.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,850.40 : 488,775.60 = 280,749.60 : x
  2. Step 2: Convert to fraction form
    325,850.40/488,775.60 = 280,749.60/x
  3. Step 3: Cross multiply
    325,850.40x = 488,775.60 × 280,749.60
  4. Step 4: Simplify right side
    325,850.40x = 137,223,554,189.76
  5. Step 5: Solve for x
    x = 137,223,554,189.76/325,850.40
  6. Step 6: Final answer
    x = 421,124.40

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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.