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Finding the Fourth Proportional to 363,012.80, 545,102.40 and 274,366.40

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Solution

The fourth proportional to 363,012.80, 545,102.40 and 274,366.40 is: 411,990.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,012.80 : 545,102.40 = 274,366.40 : x
  2. Step 2: Convert to fraction form
    363,012.80/545,102.40 = 274,366.40/x
  3. Step 3: Cross multiply
    363,012.80x = 545,102.40 × 274,366.40
  4. Step 4: Simplify right side
    363,012.80x = 149,557,783,119.36
  5. Step 5: Solve for x
    x = 149,557,783,119.36/363,012.80
  6. Step 6: Final answer
    x = 411,990.38

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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.