Home / 420,247.17-579,940.34-229,260.60

Finding the Fourth Proportional to 420,247.17, 579,940.34 and 229,260.60

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Solution

The fourth proportional to 420,247.17, 579,940.34 and 229,260.60 is: 316,379.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,247.17 : 579,940.34 = 229,260.60 : x
  2. Step 2: Convert to fraction form
    420,247.17/579,940.34 = 229,260.60/x
  3. Step 3: Cross multiply
    420,247.17x = 579,940.34 × 229,260.60
  4. Step 4: Simplify right side
    420,247.17x = 132,957,469,166.30
  5. Step 5: Solve for x
    x = 132,957,469,166.30/420,247.17
  6. Step 6: Final answer
    x = 316,379.21

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1.5x scale

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.