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Finding the Fourth Proportional to 338,858.20, 507,704.10 and 220,468.60

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Solution

The fourth proportional to 338,858.20, 507,704.10 and 220,468.60 is: 330,323.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,858.20 : 507,704.10 = 220,468.60 : x
  2. Step 2: Convert to fraction form
    338,858.20/507,704.10 = 220,468.60/x
  3. Step 3: Cross multiply
    338,858.20x = 507,704.10 × 220,468.60
  4. Step 4: Simplify right side
    338,858.20x = 111,932,812,141.26
  5. Step 5: Solve for x
    x = 111,932,812,141.26/338,858.20
  6. Step 6: Final answer
    x = 330,323.46

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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.