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Finding the Fourth Proportional to 445,077.18, 667,656.81 and 145,559.43

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Solution

The fourth proportional to 445,077.18, 667,656.81 and 145,559.43 is: 218,352.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,077.18 : 667,656.81 = 145,559.43 : x
  2. Step 2: Convert to fraction form
    445,077.18/667,656.81 = 145,559.43/x
  3. Step 3: Cross multiply
    445,077.18x = 667,656.81 × 145,559.43
  4. Step 4: Simplify right side
    445,077.18x = 97,183,744,699.22
  5. Step 5: Solve for x
    x = 97,183,744,699.22/445,077.18
  6. Step 6: Final answer
    x = 218,352.57

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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.