Home / 420,913.43-580,873.26-229,939.12

Finding the Fourth Proportional to 420,913.43, 580,873.26 and 229,939.12

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Solution

The fourth proportional to 420,913.43, 580,873.26 and 229,939.12 is: 317,322.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,913.43 : 580,873.26 = 229,939.12 : x
  2. Step 2: Convert to fraction form
    420,913.43/580,873.26 = 229,939.12/x
  3. Step 3: Cross multiply
    420,913.43x = 580,873.26 × 229,939.12
  4. Step 4: Simplify right side
    420,913.43x = 133,565,482,181.87
  5. Step 5: Solve for x
    x = 133,565,482,181.87/420,913.43
  6. Step 6: Final answer
    x = 317,322.93

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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.