Home / 420,940.80-580,890.98-229,949.28

Finding the Fourth Proportional to 420,940.80, 580,890.98 and 229,949.28

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Solution

The fourth proportional to 420,940.80, 580,890.98 and 229,949.28 is: 317,326.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,940.80 : 580,890.98 = 229,949.28 : x
  2. Step 2: Convert to fraction form
    420,940.80/580,890.98 = 229,949.28/x
  3. Step 3: Cross multiply
    420,940.80x = 580,890.98 × 229,949.28
  4. Step 4: Simplify right side
    420,940.80x = 133,575,462,609.49
  5. Step 5: Solve for x
    x = 133,575,462,609.49/420,940.80
  6. Step 6: Final answer
    x = 317,326.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.