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Finding the Fourth Proportional to 301,288.17, 451,934.91 and 76,648.80

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Solution

The fourth proportional to 301,288.17, 451,934.91 and 76,648.80 is: 114,973.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,288.17 : 451,934.91 = 76,648.80 : x
  2. Step 2: Convert to fraction form
    301,288.17/451,934.91 = 76,648.80/x
  3. Step 3: Cross multiply
    301,288.17x = 451,934.91 × 76,648.80
  4. Step 4: Simplify right side
    301,288.17x = 34,640,268,529.61
  5. Step 5: Solve for x
    x = 34,640,268,529.61/301,288.17
  6. Step 6: Final answer
    x = 114,973.88

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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.