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Finding the Fourth Proportional to 297,115.70, 445,713.23 and 86,750.60

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Solution

The fourth proportional to 297,115.70, 445,713.23 and 86,750.60 is: 130,137.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,115.70 : 445,713.23 = 86,750.60 : x
  2. Step 2: Convert to fraction form
    297,115.70/445,713.23 = 86,750.60/x
  3. Step 3: Cross multiply
    297,115.70x = 445,713.23 × 86,750.60
  4. Step 4: Simplify right side
    297,115.70x = 38,665,888,118.75
  5. Step 5: Solve for x
    x = 38,665,888,118.75/297,115.70
  6. Step 6: Final answer
    x = 130,137.48

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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.