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Finding the Fourth Proportional to 424,745.68, 637,210.68 and 129,250

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Solution

The fourth proportional to 424,745.68, 637,210.68 and 129,250 is: 193,903.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,745.68 : 637,210.68 = 129,250 : x
  2. Step 2: Convert to fraction form
    424,745.68/637,210.68 = 129,250/x
  3. Step 3: Cross multiply
    424,745.68x = 637,210.68 × 129,250
  4. Step 4: Simplify right side
    424,745.68x = 82,359,480,390
  5. Step 5: Solve for x
    x = 82,359,480,390/424,745.68
  6. Step 6: Final answer
    x = 193,903.04

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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.