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Finding the Fourth Proportional to 303,980.40, 455,996.52 and 79,370.64

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Solution

The fourth proportional to 303,980.40, 455,996.52 and 79,370.64 is: 119,062.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,980.40 : 455,996.52 = 79,370.64 : x
  2. Step 2: Convert to fraction form
    303,980.40/455,996.52 = 79,370.64/x
  3. Step 3: Cross multiply
    303,980.40x = 455,996.52 × 79,370.64
  4. Step 4: Simplify right side
    303,980.40x = 36,192,735,630.17
  5. Step 5: Solve for x
    x = 36,192,735,630.17/303,980.40
  6. Step 6: Final answer
    x = 119,062.73

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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.