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Finding the Fourth Proportional to 259,033.64, 388,549.02 and 81,553.64

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Solution

The fourth proportional to 259,033.64, 388,549.02 and 81,553.64 is: 122,330.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,033.64 : 388,549.02 = 81,553.64 : x
  2. Step 2: Convert to fraction form
    259,033.64/388,549.02 = 81,553.64/x
  3. Step 3: Cross multiply
    259,033.64x = 388,549.02 × 81,553.64
  4. Step 4: Simplify right side
    259,033.64x = 31,687,586,899.43
  5. Step 5: Solve for x
    x = 31,687,586,899.43/259,033.64
  6. Step 6: Final answer
    x = 122,330.01

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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.