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Finding the Fourth Proportional to 248,350.20, 372,314.70 and 90,486.60

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Solution

The fourth proportional to 248,350.20, 372,314.70 and 90,486.60 is: 135,653.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,350.20 : 372,314.70 = 90,486.60 : x
  2. Step 2: Convert to fraction form
    248,350.20/372,314.70 = 90,486.60/x
  3. Step 3: Cross multiply
    248,350.20x = 372,314.70 × 90,486.60
  4. Step 4: Simplify right side
    248,350.20x = 33,689,491,333.02
  5. Step 5: Solve for x
    x = 33,689,491,333.02/248,350.20
  6. Step 6: Final answer
    x = 135,653.17

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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.