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Finding the Fourth Proportional to 301,236.36, 451,857.80 and 90,876.12

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Solution

The fourth proportional to 301,236.36, 451,857.80 and 90,876.12 is: 136,315.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,236.36 : 451,857.80 = 90,876.12 : x
  2. Step 2: Convert to fraction form
    301,236.36/451,857.80 = 90,876.12/x
  3. Step 3: Cross multiply
    301,236.36x = 451,857.80 × 90,876.12
  4. Step 4: Simplify right side
    301,236.36x = 41,063,083,655.74
  5. Step 5: Solve for x
    x = 41,063,083,655.74/301,236.36
  6. Step 6: Final answer
    x = 136,315.16

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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.