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Finding the Fourth Proportional to 353,087.75, 529,627.06 and 86,850.57

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Solution

The fourth proportional to 353,087.75, 529,627.06 and 86,850.57 is: 130,274.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,087.75 : 529,627.06 = 86,850.57 : x
  2. Step 2: Convert to fraction form
    353,087.75/529,627.06 = 86,850.57/x
  3. Step 3: Cross multiply
    353,087.75x = 529,627.06 × 86,850.57
  4. Step 4: Simplify right side
    353,087.75x = 45,998,412,048.42
  5. Step 5: Solve for x
    x = 45,998,412,048.42/353,087.75
  6. Step 6: Final answer
    x = 130,274.73

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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.