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Finding the Fourth Proportional to 307,778.03, 424,716.08 and 171,820.61

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Solution

The fourth proportional to 307,778.03, 424,716.08 and 171,820.61 is: 237,102.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,778.03 : 424,716.08 = 171,820.61 : x
  2. Step 2: Convert to fraction form
    307,778.03/424,716.08 = 171,820.61/x
  3. Step 3: Cross multiply
    307,778.03x = 424,716.08 × 171,820.61
  4. Step 4: Simplify right side
    307,778.03x = 72,974,974,552.41
  5. Step 5: Solve for x
    x = 72,974,974,552.41/307,778.03
  6. Step 6: Final answer
    x = 237,102.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.