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Finding the Fourth Proportional to 169,279.20, 253,983.60 and 166,622.40

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Solution

The fourth proportional to 169,279.20, 253,983.60 and 166,622.40 is: 249,997.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,279.20 : 253,983.60 = 166,622.40 : x
  2. Step 2: Convert to fraction form
    169,279.20/253,983.60 = 166,622.40/x
  3. Step 3: Cross multiply
    169,279.20x = 253,983.60 × 166,622.40
  4. Step 4: Simplify right side
    169,279.20x = 42,319,356,992.64
  5. Step 5: Solve for x
    x = 42,319,356,992.64/169,279.20
  6. Step 6: Final answer
    x = 249,997.38

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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.