Home / 445,231.20-667,911.60-145,639.20

Finding the Fourth Proportional to 445,231.20, 667,911.60 and 145,639.20

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Solution

The fourth proportional to 445,231.20, 667,911.60 and 145,639.20 is: 218,480.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,231.20 : 667,911.60 = 145,639.20 : x
  2. Step 2: Convert to fraction form
    445,231.20/667,911.60 = 145,639.20/x
  3. Step 3: Cross multiply
    445,231.20x = 667,911.60 × 145,639.20
  4. Step 4: Simplify right side
    445,231.20x = 97,274,111,094.72
  5. Step 5: Solve for x
    x = 97,274,111,094.72/445,231.20
  6. Step 6: Final answer
    x = 218,480.00

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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.