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Finding the Fourth Proportional to 300,812.67, 451,219.01 and 142,955.01

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Solution

The fourth proportional to 300,812.67, 451,219.01 and 142,955.01 is: 214,432.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,812.67 : 451,219.01 = 142,955.01 : x
  2. Step 2: Convert to fraction form
    300,812.67/451,219.01 = 142,955.01/x
  3. Step 3: Cross multiply
    300,812.67x = 451,219.01 × 142,955.01
  4. Step 4: Simplify right side
    300,812.67x = 64,504,017,371.97
  5. Step 5: Solve for x
    x = 64,504,017,371.97/300,812.67
  6. Step 6: Final answer
    x = 214,432.52

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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.