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Finding the Fourth Proportional to 303,695.88, 455,821.92 and 154,039.56

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Solution

The fourth proportional to 303,695.88, 455,821.92 and 154,039.56 is: 231,200.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,695.88 : 455,821.92 = 154,039.56 : x
  2. Step 2: Convert to fraction form
    303,695.88/455,821.92 = 154,039.56/x
  3. Step 3: Cross multiply
    303,695.88x = 455,821.92 × 154,039.56
  4. Step 4: Simplify right side
    303,695.88x = 70,214,607,995.16
  5. Step 5: Solve for x
    x = 70,214,607,995.16/303,695.88
  6. Step 6: Final answer
    x = 231,200.40

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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.