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Finding the Fourth Proportional to 306,664.45, 423,187.52 and 170,694.90

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Solution

The fourth proportional to 306,664.45, 423,187.52 and 170,694.90 is: 235,553.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,664.45 : 423,187.52 = 170,694.90 : x
  2. Step 2: Convert to fraction form
    306,664.45/423,187.52 = 170,694.90/x
  3. Step 3: Cross multiply
    306,664.45x = 423,187.52 × 170,694.90
  4. Step 4: Simplify right side
    306,664.45x = 72,235,950,554.17
  5. Step 5: Solve for x
    x = 72,235,950,554.17/306,664.45
  6. Step 6: Final answer
    x = 235,553.72

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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.