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Finding the Fourth Proportional to 338,469.80, 507,704.70 and 322,917.80

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Solution

The fourth proportional to 338,469.80, 507,704.70 and 322,917.80 is: 484,376.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,469.80 : 507,704.70 = 322,917.80 : x
  2. Step 2: Convert to fraction form
    338,469.80/507,704.70 = 322,917.80/x
  3. Step 3: Cross multiply
    338,469.80x = 507,704.70 × 322,917.80
  4. Step 4: Simplify right side
    338,469.80x = 163,946,884,773.66
  5. Step 5: Solve for x
    x = 163,946,884,773.66/338,469.80
  6. Step 6: Final answer
    x = 484,376.70

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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.