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Finding the Fourth Proportional to 200,630.96, 301,076.80 and 86,889.85

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Solution

The fourth proportional to 200,630.96, 301,076.80 and 86,889.85 is: 130,391.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,630.96 : 301,076.80 = 86,889.85 : x
  2. Step 2: Convert to fraction form
    200,630.96/301,076.80 = 86,889.85/x
  3. Step 3: Cross multiply
    200,630.96x = 301,076.80 × 86,889.85
  4. Step 4: Simplify right side
    200,630.96x = 26,160,517,020.56
  5. Step 5: Solve for x
    x = 26,160,517,020.56/200,630.96
  6. Step 6: Final answer
    x = 130,391.23

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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.