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Finding the Fourth Proportional to 171,630.13, 257,462.49 and 45,279.11

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Solution

The fourth proportional to 171,630.13, 257,462.49 and 45,279.11 is: 67,923.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,630.13 : 257,462.49 = 45,279.11 : x
  2. Step 2: Convert to fraction form
    171,630.13/257,462.49 = 45,279.11/x
  3. Step 3: Cross multiply
    171,630.13x = 257,462.49 × 45,279.11
  4. Step 4: Simplify right side
    171,630.13x = 11,657,672,405.58
  5. Step 5: Solve for x
    x = 11,657,672,405.58/171,630.13
  6. Step 6: Final answer
    x = 67,923.23

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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.