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Finding the Fourth Proportional to 265,004.80, 397,507.20 and 263,449.60

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Solution

The fourth proportional to 265,004.80, 397,507.20 and 263,449.60 is: 395,174.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,004.80 : 397,507.20 = 263,449.60 : x
  2. Step 2: Convert to fraction form
    265,004.80/397,507.20 = 263,449.60/x
  3. Step 3: Cross multiply
    265,004.80x = 397,507.20 × 263,449.60
  4. Step 4: Simplify right side
    265,004.80x = 104,723,112,837.12
  5. Step 5: Solve for x
    x = 104,723,112,837.12/265,004.80
  6. Step 6: Final answer
    x = 395,174.40

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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.