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Finding the Fourth Proportional to 303,617.60, 455,061.90 and 126,033.20

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Solution

The fourth proportional to 303,617.60, 455,061.90 and 126,033.20 is: 188,898.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,617.60 : 455,061.90 = 126,033.20 : x
  2. Step 2: Convert to fraction form
    303,617.60/455,061.90 = 126,033.20/x
  3. Step 3: Cross multiply
    303,617.60x = 455,061.90 × 126,033.20
  4. Step 4: Simplify right side
    303,617.60x = 57,352,907,455.08
  5. Step 5: Solve for x
    x = 57,352,907,455.08/303,617.60
  6. Step 6: Final answer
    x = 188,898.49

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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.