Home / 356,115.98-491,446.23-220,146.55

Finding the Fourth Proportional to 356,115.98, 491,446.23 and 220,146.55

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Solution

The fourth proportional to 356,115.98, 491,446.23 and 220,146.55 is: 303,806.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,115.98 : 491,446.23 = 220,146.55 : x
  2. Step 2: Convert to fraction form
    356,115.98/491,446.23 = 220,146.55/x
  3. Step 3: Cross multiply
    356,115.98x = 491,446.23 × 220,146.55
  4. Step 4: Simplify right side
    356,115.98x = 108,190,192,045.01
  5. Step 5: Solve for x
    x = 108,190,192,045.01/356,115.98
  6. Step 6: Final answer
    x = 303,806.06

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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.