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Finding the Fourth Proportional to 388,340.48, 582,513.92 and 122,094.72

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Solution

The fourth proportional to 388,340.48, 582,513.92 and 122,094.72 is: 183,143.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,340.48 : 582,513.92 = 122,094.72 : x
  2. Step 2: Convert to fraction form
    388,340.48/582,513.92 = 122,094.72/x
  3. Step 3: Cross multiply
    388,340.48x = 582,513.92 × 122,094.72
  4. Step 4: Simplify right side
    388,340.48x = 71,121,873,958.50
  5. Step 5: Solve for x
    x = 71,121,873,958.50/388,340.48
  6. Step 6: Final answer
    x = 183,143.09

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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.