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Finding the Fourth Proportional to 363,138.80, 501,145.80 and 219,817.76

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Solution

The fourth proportional to 363,138.80, 501,145.80 and 219,817.76 is: 303,357.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,138.80 : 501,145.80 = 219,817.76 : x
  2. Step 2: Convert to fraction form
    363,138.80/501,145.80 = 219,817.76/x
  3. Step 3: Cross multiply
    363,138.80x = 501,145.80 × 219,817.76
  4. Step 4: Simplify right side
    363,138.80x = 110,160,747,189.41
  5. Step 5: Solve for x
    x = 110,160,747,189.41/363,138.80
  6. Step 6: Final answer
    x = 303,357.14

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1.5x scale

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.