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Finding the Fourth Proportional to 481,307.75, 663,996.15 and 290,214.98

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Solution

The fourth proportional to 481,307.75, 663,996.15 and 290,214.98 is: 400,370.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,307.75 : 663,996.15 = 290,214.98 : x
  2. Step 2: Convert to fraction form
    481,307.75/663,996.15 = 290,214.98/x
  3. Step 3: Cross multiply
    481,307.75x = 663,996.15 × 290,214.98
  4. Step 4: Simplify right side
    481,307.75x = 192,701,629,392.33
  5. Step 5: Solve for x
    x = 192,701,629,392.33/481,307.75
  6. Step 6: Final answer
    x = 400,370.93

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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.