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Finding the Fourth Proportional to 388,258.56, 582,388.25 and 122,042.34

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Solution

The fourth proportional to 388,258.56, 582,388.25 and 122,042.34 is: 183,063.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,258.56 : 582,388.25 = 122,042.34 : x
  2. Step 2: Convert to fraction form
    388,258.56/582,388.25 = 122,042.34/x
  3. Step 3: Cross multiply
    388,258.56x = 582,388.25 × 122,042.34
  4. Step 4: Simplify right side
    388,258.56x = 71,076,024,208.29
  5. Step 5: Solve for x
    x = 71,076,024,208.29/388,258.56
  6. Step 6: Final answer
    x = 183,063.64

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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.