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Finding the Fourth Proportional to 363,401.37, 545,192.78 and 126,747.45

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Solution

The fourth proportional to 363,401.37, 545,192.78 and 126,747.45 is: 190,152.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,401.37 : 545,192.78 = 126,747.45 : x
  2. Step 2: Convert to fraction form
    363,401.37/545,192.78 = 126,747.45/x
  3. Step 3: Cross multiply
    363,401.37x = 545,192.78 × 126,747.45
  4. Step 4: Simplify right side
    363,401.37x = 69,101,793,989.67
  5. Step 5: Solve for x
    x = 69,101,793,989.67/363,401.37
  6. Step 6: Final answer
    x = 190,152.82

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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.