Home / 305,290.03-420,813.63-240,653.94

Finding the Fourth Proportional to 305,290.03, 420,813.63 and 240,653.94

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Solution

The fourth proportional to 305,290.03, 420,813.63 and 240,653.94 is: 331,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,290.03 : 420,813.63 = 240,653.94 : x
  2. Step 2: Convert to fraction form
    305,290.03/420,813.63 = 240,653.94/x
  3. Step 3: Cross multiply
    305,290.03x = 420,813.63 × 240,653.94
  4. Step 4: Simplify right side
    305,290.03x = 101,270,458,065.20
  5. Step 5: Solve for x
    x = 101,270,458,065.20/305,290.03
  6. Step 6: Final answer
    x = 331,718.85

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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.