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Finding the Fourth Proportional to 388,564.79, 582,796.16 and 122,326.70

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Solution

The fourth proportional to 388,564.79, 582,796.16 and 122,326.70 is: 183,473.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,564.79 : 582,796.16 = 122,326.70 : x
  2. Step 2: Convert to fraction form
    388,564.79/582,796.16 = 122,326.70/x
  3. Step 3: Cross multiply
    388,564.79x = 582,796.16 × 122,326.70
  4. Step 4: Simplify right side
    388,564.79x = 71,291,530,413.84
  5. Step 5: Solve for x
    x = 71,291,530,413.84/388,564.79
  6. Step 6: Final answer
    x = 183,473.98

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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.