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Finding the Fourth Proportional to 449,039.76, 619,079.40 and 372,269.04

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Solution

The fourth proportional to 449,039.76, 619,079.40 and 372,269.04 is: 513,237.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,039.76 : 619,079.40 = 372,269.04 : x
  2. Step 2: Convert to fraction form
    449,039.76/619,079.40 = 372,269.04/x
  3. Step 3: Cross multiply
    449,039.76x = 619,079.40 × 372,269.04
  4. Step 4: Simplify right side
    449,039.76x = 230,464,093,921.78
  5. Step 5: Solve for x
    x = 230,464,093,921.78/449,039.76
  6. Step 6: Final answer
    x = 513,237.61

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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.