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Finding the Fourth Proportional to 505,444, 758,209.74 and 131,467

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Solution

The fourth proportional to 505,444, 758,209.74 and 131,467 is: 197,211.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,444 : 758,209.74 = 131,467 : x
  2. Step 2: Convert to fraction form
    505,444/758,209.74 = 131,467/x
  3. Step 3: Cross multiply
    505,444x = 758,209.74 × 131,467
  4. Step 4: Simplify right side
    505,444x = 99,679,559,888.58
  5. Step 5: Solve for x
    x = 99,679,559,888.58/505,444
  6. Step 6: Final answer
    x = 197,211.88

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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.