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Finding the Fourth Proportional to 300,040.68, 413,679.78 and 192,420.84

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Solution

The fourth proportional to 300,040.68, 413,679.78 and 192,420.84 is: 265,299.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,040.68 : 413,679.78 = 192,420.84 : x
  2. Step 2: Convert to fraction form
    300,040.68/413,679.78 = 192,420.84/x
  3. Step 3: Cross multiply
    300,040.68x = 413,679.78 × 192,420.84
  4. Step 4: Simplify right side
    300,040.68x = 79,600,610,758.62
  5. Step 5: Solve for x
    x = 79,600,610,758.62/300,040.68
  6. Step 6: Final answer
    x = 265,299.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.