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Finding the Fourth Proportional to 363,368.88, 545,126.22 and 126,648

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Solution

The fourth proportional to 363,368.88, 545,126.22 and 126,648 is: 189,997.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,368.88 : 545,126.22 = 126,648 : x
  2. Step 2: Convert to fraction form
    363,368.88/545,126.22 = 126,648/x
  3. Step 3: Cross multiply
    363,368.88x = 545,126.22 × 126,648
  4. Step 4: Simplify right side
    363,368.88x = 69,039,145,510.56
  5. Step 5: Solve for x
    x = 69,039,145,510.56/363,368.88
  6. Step 6: Final answer
    x = 189,997.41

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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.