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Finding the Fourth Proportional to 449,318, 620,059.38 and 248,114

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Solution

The fourth proportional to 449,318, 620,059.38 and 248,114 is: 342,397.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,318 : 620,059.38 = 248,114 : x
  2. Step 2: Convert to fraction form
    449,318/620,059.38 = 248,114/x
  3. Step 3: Cross multiply
    449,318x = 620,059.38 × 248,114
  4. Step 4: Simplify right side
    449,318x = 153,845,413,009.32
  5. Step 5: Solve for x
    x = 153,845,413,009.32/449,318
  6. Step 6: Final answer
    x = 342,397.62

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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.