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Finding the Fourth Proportional to 453,942.70, 680,914.05 and 121,518.70

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Solution

The fourth proportional to 453,942.70, 680,914.05 and 121,518.70 is: 182,278.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,942.70 : 680,914.05 = 121,518.70 : x
  2. Step 2: Convert to fraction form
    453,942.70/680,914.05 = 121,518.70/x
  3. Step 3: Cross multiply
    453,942.70x = 680,914.05 × 121,518.70
  4. Step 4: Simplify right side
    453,942.70x = 82,743,790,167.74
  5. Step 5: Solve for x
    x = 82,743,790,167.74/453,942.70
  6. Step 6: Final answer
    x = 182,278.05

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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.