Home / 420,904.80-580,839.19-229,918.95

Finding the Fourth Proportional to 420,904.80, 580,839.19 and 229,918.95

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Solution

The fourth proportional to 420,904.80, 580,839.19 and 229,918.95 is: 317,283.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,904.80 : 580,839.19 = 229,918.95 : x
  2. Step 2: Convert to fraction form
    420,904.80/580,839.19 = 229,918.95/x
  3. Step 3: Cross multiply
    420,904.80x = 580,839.19 × 229,918.95
  4. Step 4: Simplify right side
    420,904.80x = 133,545,936,108.85
  5. Step 5: Solve for x
    x = 133,545,936,108.85/420,904.80
  6. Step 6: Final answer
    x = 317,283.00

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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.