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Finding the Fourth Proportional to 629,947.40, 944,921.10 and 256,238.60

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Solution

The fourth proportional to 629,947.40, 944,921.10 and 256,238.60 is: 384,357.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,947.40 : 944,921.10 = 256,238.60 : x
  2. Step 2: Convert to fraction form
    629,947.40/944,921.10 = 256,238.60/x
  3. Step 3: Cross multiply
    629,947.40x = 944,921.10 × 256,238.60
  4. Step 4: Simplify right side
    629,947.40x = 242,125,259,774.46
  5. Step 5: Solve for x
    x = 242,125,259,774.46/629,947.40
  6. Step 6: Final answer
    x = 384,357.90

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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.