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Finding the Fourth Proportional to 171,635.40, 257,472.30 and 53,305.80

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Solution

The fourth proportional to 171,635.40, 257,472.30 and 53,305.80 is: 79,964.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,635.40 : 257,472.30 = 53,305.80 : x
  2. Step 2: Convert to fraction form
    171,635.40/257,472.30 = 53,305.80/x
  3. Step 3: Cross multiply
    171,635.40x = 257,472.30 × 53,305.80
  4. Step 4: Simplify right side
    171,635.40x = 13,724,766,929.34
  5. Step 5: Solve for x
    x = 13,724,766,929.34/171,635.40
  6. Step 6: Final answer
    x = 79,964.66

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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.