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Finding the Fourth Proportional to 487,396.60, 730,835.70 and 206,596.60

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Solution

The fourth proportional to 487,396.60, 730,835.70 and 206,596.60 is: 309,785.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,396.60 : 730,835.70 = 206,596.60 : x
  2. Step 2: Convert to fraction form
    487,396.60/730,835.70 = 206,596.60/x
  3. Step 3: Cross multiply
    487,396.60x = 730,835.70 × 206,596.60
  4. Step 4: Simplify right side
    487,396.60x = 150,988,170,778.62
  5. Step 5: Solve for x
    x = 150,988,170,778.62/487,396.60
  6. Step 6: Final answer
    x = 309,785.03

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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.