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Finding the Fourth Proportional to 503,245.50, 754,868.25 and 129,268.50

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Solution

The fourth proportional to 503,245.50, 754,868.25 and 129,268.50 is: 193,902.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,245.50 : 754,868.25 = 129,268.50 : x
  2. Step 2: Convert to fraction form
    503,245.50/754,868.25 = 129,268.50/x
  3. Step 3: Cross multiply
    503,245.50x = 754,868.25 × 129,268.50
  4. Step 4: Simplify right side
    503,245.50x = 97,580,686,375.13
  5. Step 5: Solve for x
    x = 97,580,686,375.13/503,245.50
  6. Step 6: Final answer
    x = 193,902.75

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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.