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Finding the Fourth Proportional to 343,485.40, 515,082.30 and 166,046.80

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Solution

The fourth proportional to 343,485.40, 515,082.30 and 166,046.80 is: 248,999.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,485.40 : 515,082.30 = 166,046.80 : x
  2. Step 2: Convert to fraction form
    343,485.40/515,082.30 = 166,046.80/x
  3. Step 3: Cross multiply
    343,485.40x = 515,082.30 × 166,046.80
  4. Step 4: Simplify right side
    343,485.40x = 85,527,767,651.64
  5. Step 5: Solve for x
    x = 85,527,767,651.64/343,485.40
  6. Step 6: Final answer
    x = 248,999.72

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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.