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Finding the Fourth Proportional to 486,269.88, 729,499.37 and 186,728.44

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Solution

The fourth proportional to 486,269.88, 729,499.37 and 186,728.44 is: 280,128.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,269.88 : 729,499.37 = 186,728.44 : x
  2. Step 2: Convert to fraction form
    486,269.88/729,499.37 = 186,728.44/x
  3. Step 3: Cross multiply
    486,269.88x = 729,499.37 × 186,728.44
  4. Step 4: Simplify right side
    486,269.88x = 136,218,277,951.50
  5. Step 5: Solve for x
    x = 136,218,277,951.50/486,269.88
  6. Step 6: Final answer
    x = 280,128.96

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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.