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Finding the Fourth Proportional to 351,464.60, 485,023.45 and 190,319.65

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Solution

The fourth proportional to 351,464.60, 485,023.45 and 190,319.65 is: 262,642.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,464.60 : 485,023.45 = 190,319.65 : x
  2. Step 2: Convert to fraction form
    351,464.60/485,023.45 = 190,319.65/x
  3. Step 3: Cross multiply
    351,464.60x = 485,023.45 × 190,319.65
  4. Step 4: Simplify right side
    351,464.60x = 92,309,493,138.37
  5. Step 5: Solve for x
    x = 92,309,493,138.37/351,464.60
  6. Step 6: Final answer
    x = 262,642.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.