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Finding the Fourth Proportional to 388,529.94, 582,888.18 and 148,639.88

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Solution

The fourth proportional to 388,529.94, 582,888.18 and 148,639.88 is: 222,995.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,529.94 : 582,888.18 = 148,639.88 : x
  2. Step 2: Convert to fraction form
    388,529.94/582,888.18 = 148,639.88/x
  3. Step 3: Cross multiply
    388,529.94x = 582,888.18 × 148,639.88
  4. Step 4: Simplify right side
    388,529.94x = 86,640,429,128.62
  5. Step 5: Solve for x
    x = 86,640,429,128.62/388,529.94
  6. Step 6: Final answer
    x = 222,995.50

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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.