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Finding the Fourth Proportional to 307,704.18, 424,653.12 and 171,764.85

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Solution

The fourth proportional to 307,704.18, 424,653.12 and 171,764.85 is: 237,047.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,704.18 : 424,653.12 = 171,764.85 : x
  2. Step 2: Convert to fraction form
    307,704.18/424,653.12 = 171,764.85/x
  3. Step 3: Cross multiply
    307,704.18x = 424,653.12 × 171,764.85
  4. Step 4: Simplify right side
    307,704.18x = 72,940,479,458.83
  5. Step 5: Solve for x
    x = 72,940,479,458.83/307,704.18
  6. Step 6: Final answer
    x = 237,047.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.