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Finding the Fourth Proportional to 486,169.72, 729,254.58 and 131,183.74

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Solution

The fourth proportional to 486,169.72, 729,254.58 and 131,183.74 is: 196,775.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,169.72 : 729,254.58 = 131,183.74 : x
  2. Step 2: Convert to fraction form
    486,169.72/729,254.58 = 131,183.74/x
  3. Step 3: Cross multiply
    486,169.72x = 729,254.58 × 131,183.74
  4. Step 4: Simplify right side
    486,169.72x = 95,666,343,216.53
  5. Step 5: Solve for x
    x = 95,666,343,216.53/486,169.72
  6. Step 6: Final answer
    x = 196,775.61

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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.