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Finding the Fourth Proportional to 203,404.31, 305,157.29 and 143,549.66

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Solution

The fourth proportional to 203,404.31, 305,157.29 and 143,549.66 is: 215,360.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,404.31 : 305,157.29 = 143,549.66 : x
  2. Step 2: Convert to fraction form
    203,404.31/305,157.29 = 143,549.66/x
  3. Step 3: Cross multiply
    203,404.31x = 305,157.29 × 143,549.66
  4. Step 4: Simplify right side
    203,404.31x = 43,805,224,362.12
  5. Step 5: Solve for x
    x = 43,805,224,362.12/203,404.31
  6. Step 6: Final answer
    x = 215,360.35

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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.