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Finding the Fourth Proportional to 449,040.60, 619,744.14 and 279,329.40

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Solution

The fourth proportional to 449,040.60, 619,744.14 and 279,329.40 is: 385,516.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,040.60 : 619,744.14 = 279,329.40 : x
  2. Step 2: Convert to fraction form
    449,040.60/619,744.14 = 279,329.40/x
  3. Step 3: Cross multiply
    449,040.60x = 619,744.14 × 279,329.40
  4. Step 4: Simplify right side
    449,040.60x = 173,112,758,779.72
  5. Step 5: Solve for x
    x = 173,112,758,779.72/449,040.60
  6. Step 6: Final answer
    x = 385,516.94

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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.