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Finding the Fourth Proportional to 486,429.80, 729,644.70 and 131,433.80

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Solution

The fourth proportional to 486,429.80, 729,644.70 and 131,433.80 is: 197,150.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,429.80 : 729,644.70 = 131,433.80 : x
  2. Step 2: Convert to fraction form
    486,429.80/729,644.70 = 131,433.80/x
  3. Step 3: Cross multiply
    486,429.80x = 729,644.70 × 131,433.80
  4. Step 4: Simplify right side
    486,429.80x = 95,899,975,570.86
  5. Step 5: Solve for x
    x = 95,899,975,570.86/486,429.80
  6. Step 6: Final answer
    x = 197,150.70

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Similar ratio
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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.