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Finding the Fourth Proportional to 206,757.87, 310,258.68 and 86,835.86

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Solution

The fourth proportional to 206,757.87, 310,258.68 and 86,835.86 is: 130,304.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,757.87 : 310,258.68 = 86,835.86 : x
  2. Step 2: Convert to fraction form
    206,757.87/310,258.68 = 86,835.86/x
  3. Step 3: Cross multiply
    206,757.87x = 310,258.68 × 86,835.86
  4. Step 4: Simplify right side
    206,757.87x = 26,941,579,300.26
  5. Step 5: Solve for x
    x = 26,941,579,300.26/206,757.87
  6. Step 6: Final answer
    x = 130,304.98

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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.