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Finding the Fourth Proportional to 388,620.06, 582,679.70 and 163,920.39

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Solution

The fourth proportional to 388,620.06, 582,679.70 and 163,920.39 is: 245,774.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,620.06 : 582,679.70 = 163,920.39 : x
  2. Step 2: Convert to fraction form
    388,620.06/582,679.70 = 163,920.39/x
  3. Step 3: Cross multiply
    388,620.06x = 582,679.70 × 163,920.39
  4. Step 4: Simplify right side
    388,620.06x = 95,513,082,849.48
  5. Step 5: Solve for x
    x = 95,513,082,849.48/388,620.06
  6. Step 6: Final answer
    x = 245,774.97

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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.