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Finding the Fourth Proportional to 206,680.40, 310,020.60 and 203,915.60

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Solution

The fourth proportional to 206,680.40, 310,020.60 and 203,915.60 is: 305,873.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,680.40 : 310,020.60 = 203,915.60 : x
  2. Step 2: Convert to fraction form
    206,680.40/310,020.60 = 203,915.60/x
  3. Step 3: Cross multiply
    206,680.40x = 310,020.60 × 203,915.60
  4. Step 4: Simplify right side
    206,680.40x = 63,218,036,661.36
  5. Step 5: Solve for x
    x = 63,218,036,661.36/206,680.40
  6. Step 6: Final answer
    x = 305,873.40

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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.