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Finding the Fourth Proportional to 445,682.64, 668,458.20 and 130,054.80

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Solution

The fourth proportional to 445,682.64, 668,458.20 and 130,054.80 is: 195,063.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,682.64 : 668,458.20 = 130,054.80 : x
  2. Step 2: Convert to fraction form
    445,682.64/668,458.20 = 130,054.80/x
  3. Step 3: Cross multiply
    445,682.64x = 668,458.20 × 130,054.80
  4. Step 4: Simplify right side
    445,682.64x = 86,936,197,509.36
  5. Step 5: Solve for x
    x = 86,936,197,509.36/445,682.64
  6. Step 6: Final answer
    x = 195,063.01

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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.