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Finding the Fourth Proportional to 258,771.29, 388,153.44 and 66,644.64

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Solution

The fourth proportional to 258,771.29, 388,153.44 and 66,644.64 is: 99,966.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,771.29 : 388,153.44 = 66,644.64 : x
  2. Step 2: Convert to fraction form
    258,771.29/388,153.44 = 66,644.64/x
  3. Step 3: Cross multiply
    258,771.29x = 388,153.44 × 66,644.64
  4. Step 4: Simplify right side
    258,771.29x = 25,868,346,273.56
  5. Step 5: Solve for x
    x = 25,868,346,273.56/258,771.29
  6. Step 6: Final answer
    x = 99,966.06

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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.