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Finding the Fourth Proportional to 388,644.72, 582,982.44 and 108,186.48

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Solution

The fourth proportional to 388,644.72, 582,982.44 and 108,186.48 is: 162,284.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,644.72 : 582,982.44 = 108,186.48 : x
  2. Step 2: Convert to fraction form
    388,644.72/582,982.44 = 108,186.48/x
  3. Step 3: Cross multiply
    388,644.72x = 582,982.44 × 108,186.48
  4. Step 4: Simplify right side
    388,644.72x = 63,070,818,085.41
  5. Step 5: Solve for x
    x = 63,070,818,085.41/388,644.72
  6. Step 6: Final answer
    x = 162,284.00

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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.