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Finding the Fourth Proportional to 388,351.48, 582,552.33 and 122,122.30

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Solution

The fourth proportional to 388,351.48, 582,552.33 and 122,122.30 is: 183,191.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,351.48 : 582,552.33 = 122,122.30 : x
  2. Step 2: Convert to fraction form
    388,351.48/582,552.33 = 122,122.30/x
  3. Step 3: Cross multiply
    388,351.48x = 582,552.33 × 122,122.30
  4. Step 4: Simplify right side
    388,351.48x = 71,142,630,409.96
  5. Step 5: Solve for x
    x = 71,142,630,409.96/388,351.48
  6. Step 6: Final answer
    x = 183,191.35

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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.