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Finding the Fourth Proportional to 388,485.50, 582,727.41 and 122,269.28

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Solution

The fourth proportional to 388,485.50, 582,727.41 and 122,269.28 is: 183,403.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,485.50 : 582,727.41 = 122,269.28 : x
  2. Step 2: Convert to fraction form
    388,485.50/582,727.41 = 122,269.28/x
  3. Step 3: Cross multiply
    388,485.50x = 582,727.41 × 122,269.28
  4. Step 4: Simplify right side
    388,485.50x = 71,249,657,943.33
  5. Step 5: Solve for x
    x = 71,249,657,943.33/388,485.50
  6. Step 6: Final answer
    x = 183,403.65

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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.