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Finding the Fourth Proportional to 445,017.63, 667,675.49 and 145,512.03

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Solution

The fourth proportional to 445,017.63, 667,675.49 and 145,512.03 is: 218,316.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,017.63 : 667,675.49 = 145,512.03 : x
  2. Step 2: Convert to fraction form
    445,017.63/667,675.49 = 145,512.03/x
  3. Step 3: Cross multiply
    445,017.63x = 667,675.49 × 145,512.03
  4. Step 4: Simplify right side
    445,017.63x = 97,154,815,203.58
  5. Step 5: Solve for x
    x = 97,154,815,203.58/445,017.63
  6. Step 6: Final answer
    x = 218,316.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.