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Finding the Fourth Proportional to 424,830.78, 637,059.20 and 225,105.13

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Solution

The fourth proportional to 424,830.78, 637,059.20 and 225,105.13 is: 337,558.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,830.78 : 637,059.20 = 225,105.13 : x
  2. Step 2: Convert to fraction form
    424,830.78/637,059.20 = 225,105.13/x
  3. Step 3: Cross multiply
    424,830.78x = 637,059.20 × 225,105.13
  4. Step 4: Simplify right side
    424,830.78x = 143,405,291,315.52
  5. Step 5: Solve for x
    x = 143,405,291,315.52/424,830.78
  6. Step 6: Final answer
    x = 337,558.62

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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.