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Finding the Fourth Proportional to 424,864, 637,296 and 129,376

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Solution

The fourth proportional to 424,864, 637,296 and 129,376 is: 194,064

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,864 : 637,296 = 129,376 : x
  2. Step 2: Convert to fraction form
    424,864/637,296 = 129,376/x
  3. Step 3: Cross multiply
    424,864x = 637,296 × 129,376
  4. Step 4: Simplify right side
    424,864x = 82,450,807,296
  5. Step 5: Solve for x
    x = 82,450,807,296/424,864
  6. Step 6: Final answer
    x = 194,064

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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.