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Finding the Fourth Proportional to 445,677.64, 668,450.70 and 130,049.80

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Solution

The fourth proportional to 445,677.64, 668,450.70 and 130,049.80 is: 195,055.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,677.64 : 668,450.70 = 130,049.80 : x
  2. Step 2: Convert to fraction form
    445,677.64/668,450.70 = 130,049.80/x
  3. Step 3: Cross multiply
    445,677.64x = 668,450.70 × 130,049.80
  4. Step 4: Simplify right side
    445,677.64x = 86,931,879,844.86
  5. Step 5: Solve for x
    x = 86,931,879,844.86/445,677.64
  6. Step 6: Final answer
    x = 195,055.51

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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.