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Finding the Fourth Proportional to 350,390, 483,538.92 and 199,487

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Solution

The fourth proportional to 350,390, 483,538.92 and 199,487 is: 275,292.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,390 : 483,538.92 = 199,487 : x
  2. Step 2: Convert to fraction form
    350,390/483,538.92 = 199,487/x
  3. Step 3: Cross multiply
    350,390x = 483,538.92 × 199,487
  4. Step 4: Simplify right side
    350,390x = 96,459,728,534.04
  5. Step 5: Solve for x
    x = 96,459,728,534.04/350,390
  6. Step 6: Final answer
    x = 275,292.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.