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Finding the Fourth Proportional to 643,362.40, 965,277.60 and 222,680.80

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Solution

The fourth proportional to 643,362.40, 965,277.60 and 222,680.80 is: 334,102.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,362.40 : 965,277.60 = 222,680.80 : x
  2. Step 2: Convert to fraction form
    643,362.40/965,277.60 = 222,680.80/x
  3. Step 3: Cross multiply
    643,362.40x = 965,277.60 × 222,680.80
  4. Step 4: Simplify right side
    643,362.40x = 214,948,788,190.08
  5. Step 5: Solve for x
    x = 214,948,788,190.08/643,362.40
  6. Step 6: Final answer
    x = 334,102.19

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Double scale
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Similar ratio
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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.