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Finding the Fourth Proportional to 388,275.96, 582,413.52 and 122,059.74

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Solution

The fourth proportional to 388,275.96, 582,413.52 and 122,059.74 is: 183,089.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,275.96 : 582,413.52 = 122,059.74 : x
  2. Step 2: Convert to fraction form
    388,275.96/582,413.52 = 122,059.74/x
  3. Step 3: Cross multiply
    388,275.96x = 582,413.52 × 122,059.74
  4. Step 4: Simplify right side
    388,275.96x = 71,089,242,823.68
  5. Step 5: Solve for x
    x = 71,089,242,823.68/388,275.96
  6. Step 6: Final answer
    x = 183,089.48

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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.