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Finding the Fourth Proportional to 445,676.64, 668,449.20 and 130,048.80

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Solution

The fourth proportional to 445,676.64, 668,449.20 and 130,048.80 is: 195,054.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,676.64 : 668,449.20 = 130,048.80 : x
  2. Step 2: Convert to fraction form
    445,676.64/668,449.20 = 130,048.80/x
  3. Step 3: Cross multiply
    445,676.64x = 668,449.20 × 130,048.80
  4. Step 4: Simplify right side
    445,676.64x = 86,931,016,320.96
  5. Step 5: Solve for x
    x = 86,931,016,320.96/445,676.64
  6. Step 6: Final answer
    x = 195,054.01

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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.