Home / 330,721.80-496,082.70-218,747.40

Finding the Fourth Proportional to 330,721.80, 496,082.70 and 218,747.40

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Solution

The fourth proportional to 330,721.80, 496,082.70 and 218,747.40 is: 328,121.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,721.80 : 496,082.70 = 218,747.40 : x
  2. Step 2: Convert to fraction form
    330,721.80/496,082.70 = 218,747.40/x
  3. Step 3: Cross multiply
    330,721.80x = 496,082.70 × 218,747.40
  4. Step 4: Simplify right side
    330,721.80x = 108,516,800,809.98
  5. Step 5: Solve for x
    x = 108,516,800,809.98/330,721.80
  6. Step 6: Final answer
    x = 328,121.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.