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Finding the Fourth Proportional to 445,678.64, 668,452.20 and 130,050.80

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Solution

The fourth proportional to 445,678.64, 668,452.20 and 130,050.80 is: 195,057.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,678.64 : 668,452.20 = 130,050.80 : x
  2. Step 2: Convert to fraction form
    445,678.64/668,452.20 = 130,050.80/x
  3. Step 3: Cross multiply
    445,678.64x = 668,452.20 × 130,050.80
  4. Step 4: Simplify right side
    445,678.64x = 86,932,743,371.76
  5. Step 5: Solve for x
    x = 86,932,743,371.76/445,678.64
  6. Step 6: Final answer
    x = 195,057.01

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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.