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Finding the Fourth Proportional to 301,328, 451,979.04 and 90,959.66

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Solution

The fourth proportional to 301,328, 451,979.04 and 90,959.66 is: 136,435.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,328 : 451,979.04 = 90,959.66 : x
  2. Step 2: Convert to fraction form
    301,328/451,979.04 = 90,959.66/x
  3. Step 3: Cross multiply
    301,328x = 451,979.04 × 90,959.66
  4. Step 4: Simplify right side
    301,328x = 41,111,859,805.53
  5. Step 5: Solve for x
    x = 41,111,859,805.53/301,328
  6. Step 6: Final answer
    x = 136,435.58

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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.