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Finding the Fourth Proportional to 448,076.12, 618,573.56 and 303,644.92

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Solution

The fourth proportional to 448,076.12, 618,573.56 and 303,644.92 is: 419,184.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,076.12 : 618,573.56 = 303,644.92 : x
  2. Step 2: Convert to fraction form
    448,076.12/618,573.56 = 303,644.92/x
  3. Step 3: Cross multiply
    448,076.12x = 618,573.56 × 303,644.92
  4. Step 4: Simplify right side
    448,076.12x = 187,826,719,140.32
  5. Step 5: Solve for x
    x = 187,826,719,140.32/448,076.12
  6. Step 6: Final answer
    x = 419,184.85

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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.