Home / 330,081.49-455,791.69-209,436.85

Finding the Fourth Proportional to 330,081.49, 455,791.69 and 209,436.85

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Solution

The fourth proportional to 330,081.49, 455,791.69 and 209,436.85 is: 289,200.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,081.49 : 455,791.69 = 209,436.85 : x
  2. Step 2: Convert to fraction form
    330,081.49/455,791.69 = 209,436.85/x
  3. Step 3: Cross multiply
    330,081.49x = 455,791.69 × 209,436.85
  4. Step 4: Simplify right side
    330,081.49x = 95,459,575,809.78
  5. Step 5: Solve for x
    x = 95,459,575,809.78/330,081.49
  6. Step 6: Final answer
    x = 289,200.03

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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.