Home / 424,821.76-637,234.28-172,107.02

Finding the Fourth Proportional to 424,821.76, 637,234.28 and 172,107.02

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Solution

The fourth proportional to 424,821.76, 637,234.28 and 172,107.02 is: 258,161.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,821.76 : 637,234.28 = 172,107.02 : x
  2. Step 2: Convert to fraction form
    424,821.76/637,234.28 = 172,107.02/x
  3. Step 3: Cross multiply
    424,821.76x = 637,234.28 × 172,107.02
  4. Step 4: Simplify right side
    424,821.76x = 109,672,492,972.65
  5. Step 5: Solve for x
    x = 109,672,492,972.65/424,821.76
  6. Step 6: Final answer
    x = 258,161.19

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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.