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Finding the Fourth Proportional to 248,490, 372,793.32 and 82,278

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Solution

The fourth proportional to 248,490, 372,793.32 and 82,278 is: 123,436.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,490 : 372,793.32 = 82,278 : x
  2. Step 2: Convert to fraction form
    248,490/372,793.32 = 82,278/x
  3. Step 3: Cross multiply
    248,490x = 372,793.32 × 82,278
  4. Step 4: Simplify right side
    248,490x = 30,672,688,782.96
  5. Step 5: Solve for x
    x = 30,672,688,782.96/248,490
  6. Step 6: Final answer
    x = 123,436.31

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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.