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Finding the Fourth Proportional to 388,610.69, 582,678.58 and 186,268.71

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Solution

The fourth proportional to 388,610.69, 582,678.58 and 186,268.71 is: 279,289.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,610.69 : 582,678.58 = 186,268.71 : x
  2. Step 2: Convert to fraction form
    388,610.69/582,678.58 = 186,268.71/x
  3. Step 3: Cross multiply
    388,610.69x = 582,678.58 × 186,268.71
  4. Step 4: Simplify right side
    388,610.69x = 108,534,787,441.23
  5. Step 5: Solve for x
    x = 108,534,787,441.23/388,610.69
  6. Step 6: Final answer
    x = 279,289.25

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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.