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Finding the Fourth Proportional to 342,076.06, 512,896.76 and 300,040.55

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Solution

The fourth proportional to 342,076.06, 512,896.76 and 300,040.55 is: 449,870.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,076.06 : 512,896.76 = 300,040.55 : x
  2. Step 2: Convert to fraction form
    342,076.06/512,896.76 = 300,040.55/x
  3. Step 3: Cross multiply
    342,076.06x = 512,896.76 × 300,040.55
  4. Step 4: Simplify right side
    342,076.06x = 153,889,827,832.49
  5. Step 5: Solve for x
    x = 153,889,827,832.49/342,076.06
  6. Step 6: Final answer
    x = 449,870.21

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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.