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Finding the Fourth Proportional to 257,237.52, 385,883 and 70,249

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Solution

The fourth proportional to 257,237.52, 385,883 and 70,249 is: 105,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,237.52 : 385,883 = 70,249 : x
  2. Step 2: Convert to fraction form
    257,237.52/385,883 = 70,249/x
  3. Step 3: Cross multiply
    257,237.52x = 385,883 × 70,249
  4. Step 4: Simplify right side
    257,237.52x = 27,107,894,867
  5. Step 5: Solve for x
    x = 27,107,894,867/257,237.52
  6. Step 6: Final answer
    x = 105,380.80

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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.