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Finding the Fourth Proportional to 300,987.90, 415,497.06 and 192,234.87

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Solution

The fourth proportional to 300,987.90, 415,497.06 and 192,234.87 is: 265,369.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,987.90 : 415,497.06 = 192,234.87 : x
  2. Step 2: Convert to fraction form
    300,987.90/415,497.06 = 192,234.87/x
  3. Step 3: Cross multiply
    300,987.90x = 415,497.06 × 192,234.87
  4. Step 4: Simplify right side
    300,987.90x = 79,873,023,314.48
  5. Step 5: Solve for x
    x = 79,873,023,314.48/300,987.90
  6. Step 6: Final answer
    x = 265,369.55

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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.