Home / 388,109.48-582,188.87-121,880.50

Finding the Fourth Proportional to 388,109.48, 582,188.87 and 121,880.50

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Solution

The fourth proportional to 388,109.48, 582,188.87 and 121,880.50 is: 182,828.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,109.48 : 582,188.87 = 121,880.50 : x
  2. Step 2: Convert to fraction form
    388,109.48/582,188.87 = 121,880.50/x
  3. Step 3: Cross multiply
    388,109.48x = 582,188.87 × 121,880.50
  4. Step 4: Simplify right side
    388,109.48x = 70,957,468,733.69
  5. Step 5: Solve for x
    x = 70,957,468,733.69/388,109.48
  6. Step 6: Final answer
    x = 182,828.49

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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.