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Finding the Fourth Proportional to 340,640.20, 511,190.70 and 190,880.20

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Solution

The fourth proportional to 340,640.20, 511,190.70 and 190,880.20 is: 286,449.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,640.20 : 511,190.70 = 190,880.20 : x
  2. Step 2: Convert to fraction form
    340,640.20/511,190.70 = 190,880.20/x
  3. Step 3: Cross multiply
    340,640.20x = 511,190.70 × 190,880.20
  4. Step 4: Simplify right side
    340,640.20x = 97,576,183,054.14
  5. Step 5: Solve for x
    x = 97,576,183,054.14/340,640.20
  6. Step 6: Final answer
    x = 286,449.41

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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.