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Finding the Fourth Proportional to 424,806.09, 637,116.70 and 140,429.46

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Solution

The fourth proportional to 424,806.09, 637,116.70 and 140,429.46 is: 210,613.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,806.09 : 637,116.70 = 140,429.46 : x
  2. Step 2: Convert to fraction form
    424,806.09/637,116.70 = 140,429.46/x
  3. Step 3: Cross multiply
    424,806.09x = 637,116.70 × 140,429.46
  4. Step 4: Simplify right side
    424,806.09x = 89,469,954,137.98
  5. Step 5: Solve for x
    x = 89,469,954,137.98/424,806.09
  6. Step 6: Final answer
    x = 210,613.63

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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.