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Finding the Fourth Proportional to 297,404.20, 445,832.54 and 128,818.60

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Solution

The fourth proportional to 297,404.20, 445,832.54 and 128,818.60 is: 193,109.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,404.20 : 445,832.54 = 128,818.60 : x
  2. Step 2: Convert to fraction form
    297,404.20/445,832.54 = 128,818.60/x
  3. Step 3: Cross multiply
    297,404.20x = 445,832.54 × 128,818.60
  4. Step 4: Simplify right side
    297,404.20x = 57,431,523,637.24
  5. Step 5: Solve for x
    x = 57,431,523,637.24/297,404.20
  6. Step 6: Final answer
    x = 193,109.32

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1.5x scale

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.