Home / 420,912.03-580,851.32-229,920.51

Finding the Fourth Proportional to 420,912.03, 580,851.32 and 229,920.51

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Solution

The fourth proportional to 420,912.03, 580,851.32 and 229,920.51 is: 317,286.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,912.03 : 580,851.32 = 229,920.51 : x
  2. Step 2: Convert to fraction form
    420,912.03/580,851.32 = 229,920.51/x
  3. Step 3: Cross multiply
    420,912.03x = 580,851.32 × 229,920.51
  4. Step 4: Simplify right side
    420,912.03x = 133,549,630,578.97
  5. Step 5: Solve for x
    x = 133,549,630,578.97/420,912.03
  6. Step 6: Final answer
    x = 317,286.32

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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.