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Finding the Fourth Proportional to 205,279.60, 307,631.40 and 163,231.60

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Solution

The fourth proportional to 205,279.60, 307,631.40 and 163,231.60 is: 244,618.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,279.60 : 307,631.40 = 163,231.60 : x
  2. Step 2: Convert to fraction form
    205,279.60/307,631.40 = 163,231.60/x
  3. Step 3: Cross multiply
    205,279.60x = 307,631.40 × 163,231.60
  4. Step 4: Simplify right side
    205,279.60x = 50,215,165,632.24
  5. Step 5: Solve for x
    x = 50,215,165,632.24/205,279.60
  6. Step 6: Final answer
    x = 244,618.39

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1.5x scale

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.