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Finding the Fourth Proportional to 203,255.01, 305,069.67 and 103,486.50

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Solution

The fourth proportional to 203,255.01, 305,069.67 and 103,486.50 is: 155,325.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,255.01 : 305,069.67 = 103,486.50 : x
  2. Step 2: Convert to fraction form
    203,255.01/305,069.67 = 103,486.50/x
  3. Step 3: Cross multiply
    203,255.01x = 305,069.67 × 103,486.50
  4. Step 4: Simplify right side
    203,255.01x = 31,570,592,404.46
  5. Step 5: Solve for x
    x = 31,570,592,404.46/203,255.01
  6. Step 6: Final answer
    x = 155,325.04

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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.