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Finding the Fourth Proportional to 388,639.16, 582,958.86 and 300,022.04

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Solution

The fourth proportional to 388,639.16, 582,958.86 and 300,022.04 is: 450,033.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,639.16 : 582,958.86 = 300,022.04 : x
  2. Step 2: Convert to fraction form
    388,639.16/582,958.86 = 300,022.04/x
  3. Step 3: Cross multiply
    388,639.16x = 582,958.86 × 300,022.04
  4. Step 4: Simplify right side
    388,639.16x = 174,900,506,413.27
  5. Step 5: Solve for x
    x = 174,900,506,413.27/388,639.16
  6. Step 6: Final answer
    x = 450,033.15

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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.