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Finding the Fourth Proportional to 388,388.66, 582,656.49 and 151,716.38

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Solution

The fourth proportional to 388,388.66, 582,656.49 and 151,716.38 is: 227,603.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,388.66 : 582,656.49 = 151,716.38 : x
  2. Step 2: Convert to fraction form
    388,388.66/582,656.49 = 151,716.38/x
  3. Step 3: Cross multiply
    388,388.66x = 582,656.49 × 151,716.38
  4. Step 4: Simplify right side
    388,388.66x = 88,398,530,533.02
  5. Step 5: Solve for x
    x = 88,398,530,533.02/388,388.66
  6. Step 6: Final answer
    x = 227,603.28

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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.