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Finding the Fourth Proportional to 328,007.60, 491,622.60 and 138,467.60

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Solution

The fourth proportional to 328,007.60, 491,622.60 and 138,467.60 is: 207,537.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,007.60 : 491,622.60 = 138,467.60 : x
  2. Step 2: Convert to fraction form
    328,007.60/491,622.60 = 138,467.60/x
  3. Step 3: Cross multiply
    328,007.60x = 491,622.60 × 138,467.60
  4. Step 4: Simplify right side
    328,007.60x = 68,073,801,527.76
  5. Step 5: Solve for x
    x = 68,073,801,527.76/328,007.60
  6. Step 6: Final answer
    x = 207,537.27

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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.