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Finding the Fourth Proportional to 512,448.60, 768,672.90 and 217,536.60

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Solution

The fourth proportional to 512,448.60, 768,672.90 and 217,536.60 is: 326,304.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,448.60 : 768,672.90 = 217,536.60 : x
  2. Step 2: Convert to fraction form
    512,448.60/768,672.90 = 217,536.60/x
  3. Step 3: Cross multiply
    512,448.60x = 768,672.90 × 217,536.60
  4. Step 4: Simplify right side
    512,448.60x = 167,214,489,178.14
  5. Step 5: Solve for x
    x = 167,214,489,178.14/512,448.60
  6. Step 6: Final answer
    x = 326,304.90

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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.