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Finding the Fourth Proportional to 300,723.40, 415,042.50 and 173,374.12

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Solution

The fourth proportional to 300,723.40, 415,042.50 and 173,374.12 is: 239,281.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,723.40 : 415,042.50 = 173,374.12 : x
  2. Step 2: Convert to fraction form
    300,723.40/415,042.50 = 173,374.12/x
  3. Step 3: Cross multiply
    300,723.40x = 415,042.50 × 173,374.12
  4. Step 4: Simplify right side
    300,723.40x = 71,957,628,200.10
  5. Step 5: Solve for x
    x = 71,957,628,200.10/300,723.40
  6. Step 6: Final answer
    x = 239,281.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.