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Finding the Fourth Proportional to 424,778.66, 637,169.69 and 172,063.90

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Solution

The fourth proportional to 424,778.66, 637,169.69 and 172,063.90 is: 258,096.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,778.66 : 637,169.69 = 172,063.90 : x
  2. Step 2: Convert to fraction form
    424,778.66/637,169.69 = 172,063.90/x
  3. Step 3: Cross multiply
    424,778.66x = 637,169.69 × 172,063.90
  4. Step 4: Simplify right side
    424,778.66x = 109,633,899,465.73
  5. Step 5: Solve for x
    x = 109,633,899,465.73/424,778.66
  6. Step 6: Final answer
    x = 258,096.54

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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.