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Finding the Fourth Proportional to 303,463.30, 455,000.55 and 126,040.90

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Solution

The fourth proportional to 303,463.30, 455,000.55 and 126,040.90 is: 188,980.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,463.30 : 455,000.55 = 126,040.90 : x
  2. Step 2: Convert to fraction form
    303,463.30/455,000.55 = 126,040.90/x
  3. Step 3: Cross multiply
    303,463.30x = 455,000.55 × 126,040.90
  4. Step 4: Simplify right side
    303,463.30x = 57,348,678,822.50
  5. Step 5: Solve for x
    x = 57,348,678,822.50/303,463.30
  6. Step 6: Final answer
    x = 188,980.61

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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.