Home / 297,406.20-445,835.54-128,820.60

Finding the Fourth Proportional to 297,406.20, 445,835.54 and 128,820.60

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Solution

The fourth proportional to 297,406.20, 445,835.54 and 128,820.60 is: 193,112.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,406.20 : 445,835.54 = 128,820.60 : x
  2. Step 2: Convert to fraction form
    297,406.20/445,835.54 = 128,820.60/x
  3. Step 3: Cross multiply
    297,406.20x = 445,835.54 × 128,820.60
  4. Step 4: Simplify right side
    297,406.20x = 57,432,801,764.12
  5. Step 5: Solve for x
    x = 57,432,801,764.12/297,406.20
  6. Step 6: Final answer
    x = 193,112.32

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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.