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Finding the Fourth Proportional to 303,170.72, 454,754.24 and 78,530.56

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Solution

The fourth proportional to 303,170.72, 454,754.24 and 78,530.56 is: 117,795.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,170.72 : 454,754.24 = 78,530.56 : x
  2. Step 2: Convert to fraction form
    303,170.72/454,754.24 = 78,530.56/x
  3. Step 3: Cross multiply
    303,170.72x = 454,754.24 × 78,530.56
  4. Step 4: Simplify right side
    303,170.72x = 35,712,105,129.57
  5. Step 5: Solve for x
    x = 35,712,105,129.57/303,170.72
  6. Step 6: Final answer
    x = 117,795.36

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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.