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Finding the Fourth Proportional to 445,992.77, 668,994.62 and 130,456.05

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Solution

The fourth proportional to 445,992.77, 668,994.62 and 130,456.05 is: 195,685.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,992.77 : 668,994.62 = 130,456.05 : x
  2. Step 2: Convert to fraction form
    445,992.77/668,994.62 = 130,456.05/x
  3. Step 3: Cross multiply
    445,992.77x = 668,994.62 × 130,456.05
  4. Step 4: Simplify right side
    445,992.77x = 87,274,395,596.45
  5. Step 5: Solve for x
    x = 87,274,395,596.45/445,992.77
  6. Step 6: Final answer
    x = 195,685.67

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1.5x scale

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.