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Finding the Fourth Proportional to 449,316, 620,056.62 and 248,112

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Solution

The fourth proportional to 449,316, 620,056.62 and 248,112 is: 342,394.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,316 : 620,056.62 = 248,112 : x
  2. Step 2: Convert to fraction form
    449,316/620,056.62 = 248,112/x
  3. Step 3: Cross multiply
    449,316x = 620,056.62 × 248,112
  4. Step 4: Simplify right side
    449,316x = 153,843,488,101.44
  5. Step 5: Solve for x
    x = 153,843,488,101.44/449,316
  6. Step 6: Final answer
    x = 342,394.86

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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.