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Finding the Fourth Proportional to 439,204, 658,797.80 and 139,705.29

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Solution

The fourth proportional to 439,204, 658,797.80 and 139,705.29 is: 209,555.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,204 : 658,797.80 = 139,705.29 : x
  2. Step 2: Convert to fraction form
    439,204/658,797.80 = 139,705.29/x
  3. Step 3: Cross multiply
    439,204x = 658,797.80 × 139,705.29
  4. Step 4: Simplify right side
    439,204x = 92,037,537,700.36
  5. Step 5: Solve for x
    x = 92,037,537,700.36/439,204
  6. Step 6: Final answer
    x = 209,555.33

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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.