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Finding the Fourth Proportional to 424,703.68, 637,147.68 and 129,208

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Solution

The fourth proportional to 424,703.68, 637,147.68 and 129,208 is: 193,840.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,703.68 : 637,147.68 = 129,208 : x
  2. Step 2: Convert to fraction form
    424,703.68/637,147.68 = 129,208/x
  3. Step 3: Cross multiply
    424,703.68x = 637,147.68 × 129,208
  4. Step 4: Simplify right side
    424,703.68x = 82,324,577,437.44
  5. Step 5: Solve for x
    x = 82,324,577,437.44/424,703.68
  6. Step 6: Final answer
    x = 193,840.04

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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.