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Finding the Fourth Proportional to 206,858.40, 310,250.34 and 57,061.54

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Solution

The fourth proportional to 206,858.40, 310,250.34 and 57,061.54 is: 85,582.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,858.40 : 310,250.34 = 57,061.54 : x
  2. Step 2: Convert to fraction form
    206,858.40/310,250.34 = 57,061.54/x
  3. Step 3: Cross multiply
    206,858.40x = 310,250.34 × 57,061.54
  4. Step 4: Simplify right side
    206,858.40x = 17,703,362,185.92
  5. Step 5: Solve for x
    x = 17,703,362,185.92/206,858.40
  6. Step 6: Final answer
    x = 85,582.03

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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.