Home / 420,917.93-580,879.47-229,943.63

Finding the Fourth Proportional to 420,917.93, 580,879.47 and 229,943.63

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Solution

The fourth proportional to 420,917.93, 580,879.47 and 229,943.63 is: 317,329.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,917.93 : 580,879.47 = 229,943.63 : x
  2. Step 2: Convert to fraction form
    420,917.93/580,879.47 = 229,943.63/x
  3. Step 3: Cross multiply
    420,917.93x = 580,879.47 × 229,943.63
  4. Step 4: Simplify right side
    420,917.93x = 133,569,533,924.28
  5. Step 5: Solve for x
    x = 133,569,533,924.28/420,917.93
  6. Step 6: Final answer
    x = 317,329.16

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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.