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Finding the Fourth Proportional to 248,191.98, 372,346.29 and 107,990.70

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Solution

The fourth proportional to 248,191.98, 372,346.29 and 107,990.70 is: 162,011.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,191.98 : 372,346.29 = 107,990.70 : x
  2. Step 2: Convert to fraction form
    248,191.98/372,346.29 = 107,990.70/x
  3. Step 3: Cross multiply
    248,191.98x = 372,346.29 × 107,990.70
  4. Step 4: Simplify right side
    248,191.98x = 40,209,936,499.50
  5. Step 5: Solve for x
    x = 40,209,936,499.50/248,191.98
  6. Step 6: Final answer
    x = 162,011.43

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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.