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Finding the Fourth Proportional to 320,437.88, 481,072.34 and 214,499.60

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Solution

The fourth proportional to 320,437.88, 481,072.34 and 214,499.60 is: 322,027.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,437.88 : 481,072.34 = 214,499.60 : x
  2. Step 2: Convert to fraction form
    320,437.88/481,072.34 = 214,499.60/x
  3. Step 3: Cross multiply
    320,437.88x = 481,072.34 × 214,499.60
  4. Step 4: Simplify right side
    320,437.88x = 103,189,824,501.06
  5. Step 5: Solve for x
    x = 103,189,824,501.06/320,437.88
  6. Step 6: Final answer
    x = 322,027.55

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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.