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Finding the Fourth Proportional to 303,462.30, 454,999.05 and 126,039.90

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Solution

The fourth proportional to 303,462.30, 454,999.05 and 126,039.90 is: 188,979.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,462.30 : 454,999.05 = 126,039.90 : x
  2. Step 2: Convert to fraction form
    303,462.30/454,999.05 = 126,039.90/x
  3. Step 3: Cross multiply
    303,462.30x = 454,999.05 × 126,039.90
  4. Step 4: Simplify right side
    303,462.30x = 57,348,034,762.10
  5. Step 5: Solve for x
    x = 57,348,034,762.10/303,462.30
  6. Step 6: Final answer
    x = 188,979.11

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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.