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Finding the Fourth Proportional to 388,548.28, 582,855.23 and 108,065.53

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Solution

The fourth proportional to 388,548.28, 582,855.23 and 108,065.53 is: 162,107.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,548.28 : 582,855.23 = 108,065.53 : x
  2. Step 2: Convert to fraction form
    388,548.28/582,855.23 = 108,065.53/x
  3. Step 3: Cross multiply
    388,548.28x = 582,855.23 × 108,065.53
  4. Step 4: Simplify right side
    388,548.28x = 62,986,559,734.09
  5. Step 5: Solve for x
    x = 62,986,559,734.09/388,548.28
  6. Step 6: Final answer
    x = 162,107.42

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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.