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Finding the Fourth Proportional to 388,529.42, 582,887.43 and 148,639.39

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Solution

The fourth proportional to 388,529.42, 582,887.43 and 148,639.39 is: 222,994.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,529.42 : 582,887.43 = 148,639.39 : x
  2. Step 2: Convert to fraction form
    388,529.42/582,887.43 = 148,639.39/x
  3. Step 3: Cross multiply
    388,529.42x = 582,887.43 × 148,639.39
  4. Step 4: Simplify right side
    388,529.42x = 86,640,030,576.65
  5. Step 5: Solve for x
    x = 86,640,030,576.65/388,529.42
  6. Step 6: Final answer
    x = 222,994.78

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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.