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Finding the Fourth Proportional to 351,485.57, 485,050.55 and 190,340.87

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Solution

The fourth proportional to 351,485.57, 485,050.55 and 190,340.87 is: 262,670.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,485.57 : 485,050.55 = 190,340.87 : x
  2. Step 2: Convert to fraction form
    351,485.57/485,050.55 = 190,340.87/x
  3. Step 3: Cross multiply
    351,485.57x = 485,050.55 × 190,340.87
  4. Step 4: Simplify right side
    351,485.57x = 92,324,940,304.02
  5. Step 5: Solve for x
    x = 92,324,940,304.02/351,485.57
  6. Step 6: Final answer
    x = 262,670.64

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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.