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Finding the Fourth Proportional to 643,601.40, 965,402.10 and 170,334.60

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Solution

The fourth proportional to 643,601.40, 965,402.10 and 170,334.60 is: 255,501.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,601.40 : 965,402.10 = 170,334.60 : x
  2. Step 2: Convert to fraction form
    643,601.40/965,402.10 = 170,334.60/x
  3. Step 3: Cross multiply
    643,601.40x = 965,402.10 × 170,334.60
  4. Step 4: Simplify right side
    643,601.40x = 164,441,380,542.66
  5. Step 5: Solve for x
    x = 164,441,380,542.66/643,601.40
  6. Step 6: Final answer
    x = 255,501.90

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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.