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Finding the Fourth Proportional to 338,758.80, 507,814.20 and 125,469.60

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Solution

The fourth proportional to 338,758.80, 507,814.20 and 125,469.60 is: 188,084.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,758.80 : 507,814.20 = 125,469.60 : x
  2. Step 2: Convert to fraction form
    338,758.80/507,814.20 = 125,469.60/x
  3. Step 3: Cross multiply
    338,758.80x = 507,814.20 × 125,469.60
  4. Step 4: Simplify right side
    338,758.80x = 63,715,244,548.32
  5. Step 5: Solve for x
    x = 63,715,244,548.32/338,758.80
  6. Step 6: Final answer
    x = 188,084.40

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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.