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Finding the Fourth Proportional to 478,771.33, 717,936.27 and 141,691.45

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Solution

The fourth proportional to 478,771.33, 717,936.27 and 141,691.45 is: 212,471.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,771.33 : 717,936.27 = 141,691.45 : x
  2. Step 2: Convert to fraction form
    478,771.33/717,936.27 = 141,691.45/x
  3. Step 3: Cross multiply
    478,771.33x = 717,936.27 × 141,691.45
  4. Step 4: Simplify right side
    478,771.33x = 101,725,431,103.89
  5. Step 5: Solve for x
    x = 101,725,431,103.89/478,771.33
  6. Step 6: Final answer
    x = 212,471.85

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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.