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Finding the Fourth Proportional to 388,730.48, 582,887.94 and 122,419.48

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Solution

The fourth proportional to 388,730.48, 582,887.94 and 122,419.48 is: 183,563.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,730.48 : 582,887.94 = 122,419.48 : x
  2. Step 2: Convert to fraction form
    388,730.48/582,887.94 = 122,419.48/x
  3. Step 3: Cross multiply
    388,730.48x = 582,887.94 × 122,419.48
  4. Step 4: Simplify right side
    388,730.48x = 71,356,838,513.07
  5. Step 5: Solve for x
    x = 71,356,838,513.07/388,730.48
  6. Step 6: Final answer
    x = 183,563.79

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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.