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Finding the Fourth Proportional to 445,690.14, 668,469.45 and 130,062.30

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Solution

The fourth proportional to 445,690.14, 668,469.45 and 130,062.30 is: 195,074.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,690.14 : 668,469.45 = 130,062.30 : x
  2. Step 2: Convert to fraction form
    445,690.14/668,469.45 = 130,062.30/x
  3. Step 3: Cross multiply
    445,690.14x = 668,469.45 × 130,062.30
  4. Step 4: Simplify right side
    445,690.14x = 86,942,674,146.74
  5. Step 5: Solve for x
    x = 86,942,674,146.74/445,690.14
  6. Step 6: Final answer
    x = 195,074.26

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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.