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Finding the Fourth Proportional to 301,288.20, 451,934.88 and 76,648.88

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Solution

The fourth proportional to 301,288.20, 451,934.88 and 76,648.88 is: 114,973.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,288.20 : 451,934.88 = 76,648.88 : x
  2. Step 2: Convert to fraction form
    301,288.20/451,934.88 = 76,648.88/x
  3. Step 3: Cross multiply
    301,288.20x = 451,934.88 × 76,648.88
  4. Step 4: Simplify right side
    301,288.20x = 34,640,302,384.93
  5. Step 5: Solve for x
    x = 34,640,302,384.93/301,288.20
  6. Step 6: Final answer
    x = 114,973.98

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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.