Home / 257,276.21-385,951.67-79,797.51

Finding the Fourth Proportional to 257,276.21, 385,951.67 and 79,797.51

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Solution

The fourth proportional to 257,276.21, 385,951.67 and 79,797.51 is: 119,707.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,276.21 : 385,951.67 = 79,797.51 : x
  2. Step 2: Convert to fraction form
    257,276.21/385,951.67 = 79,797.51/x
  3. Step 3: Cross multiply
    257,276.21x = 385,951.67 × 79,797.51
  4. Step 4: Simplify right side
    257,276.21x = 30,797,981,847.35
  5. Step 5: Solve for x
    x = 30,797,981,847.35/257,276.21
  6. Step 6: Final answer
    x = 119,707.85

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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.