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Finding the Fourth Proportional to 388,320.48, 582,558.48 and 122,148

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Solution

The fourth proportional to 388,320.48, 582,558.48 and 122,148 is: 183,246.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,320.48 : 582,558.48 = 122,148 : x
  2. Step 2: Convert to fraction form
    388,320.48/582,558.48 = 122,148/x
  3. Step 3: Cross multiply
    388,320.48x = 582,558.48 × 122,148
  4. Step 4: Simplify right side
    388,320.48x = 71,158,353,215.04
  5. Step 5: Solve for x
    x = 71,158,353,215.04/388,320.48
  6. Step 6: Final answer
    x = 183,246.46

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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.