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Finding the Fourth Proportional to 424,940.40, 637,487.40 and 214,047.60

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Solution

The fourth proportional to 424,940.40, 637,487.40 and 214,047.60 is: 321,110.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,940.40 : 637,487.40 = 214,047.60 : x
  2. Step 2: Convert to fraction form
    424,940.40/637,487.40 = 214,047.60/x
  3. Step 3: Cross multiply
    424,940.40x = 637,487.40 × 214,047.60
  4. Step 4: Simplify right side
    424,940.40x = 136,452,648,000.24
  5. Step 5: Solve for x
    x = 136,452,648,000.24/424,940.40
  6. Step 6: Final answer
    x = 321,110.09

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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.