Home / 420,917.80-580,879.06-229,934.36

Finding the Fourth Proportional to 420,917.80, 580,879.06 and 229,934.36

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Solution

The fourth proportional to 420,917.80, 580,879.06 and 229,934.36 is: 317,316.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,917.80 : 580,879.06 = 229,934.36 : x
  2. Step 2: Convert to fraction form
    420,917.80/580,879.06 = 229,934.36/x
  3. Step 3: Cross multiply
    420,917.80x = 580,879.06 × 229,934.36
  4. Step 4: Simplify right side
    420,917.80x = 133,564,054,898.50
  5. Step 5: Solve for x
    x = 133,564,054,898.50/420,917.80
  6. Step 6: Final answer
    x = 317,316.24

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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.