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Finding the Fourth Proportional to 388,639.66, 582,959.61 and 300,022.54

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Solution

The fourth proportional to 388,639.66, 582,959.61 and 300,022.54 is: 450,033.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,639.66 : 582,959.61 = 300,022.54 : x
  2. Step 2: Convert to fraction form
    388,639.66/582,959.61 = 300,022.54/x
  3. Step 3: Cross multiply
    388,639.66x = 582,959.61 × 300,022.54
  4. Step 4: Simplify right side
    388,639.66x = 174,901,022,909.61
  5. Step 5: Solve for x
    x = 174,901,022,909.61/388,639.66
  6. Step 6: Final answer
    x = 450,033.90

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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.