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Finding the Fourth Proportional to 301,231.36, 451,850.28 and 90,871.12

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Solution

The fourth proportional to 301,231.36, 451,850.28 and 90,871.12 is: 136,307.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,231.36 : 451,850.28 = 90,871.12 : x
  2. Step 2: Convert to fraction form
    301,231.36/451,850.28 = 90,871.12/x
  3. Step 3: Cross multiply
    301,231.36x = 451,850.28 × 90,871.12
  4. Step 4: Simplify right side
    301,231.36x = 41,060,141,015.91
  5. Step 5: Solve for x
    x = 41,060,141,015.91/301,231.36
  6. Step 6: Final answer
    x = 136,307.66

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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.