Home / 420,244.40-629,929.20-230,412.80

Finding the Fourth Proportional to 420,244.40, 629,929.20 and 230,412.80

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Solution

The fourth proportional to 420,244.40, 629,929.20 and 230,412.80 is: 345,379.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,244.40 : 629,929.20 = 230,412.80 : x
  2. Step 2: Convert to fraction form
    420,244.40/629,929.20 = 230,412.80/x
  3. Step 3: Cross multiply
    420,244.40x = 629,929.20 × 230,412.80
  4. Step 4: Simplify right side
    420,244.40x = 145,143,750,773.76
  5. Step 5: Solve for x
    x = 145,143,750,773.76/420,244.40
  6. Step 6: Final answer
    x = 345,379.38

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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.