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Finding the Fourth Proportional to 631,889.05, 947,833.57 and 211,164.92

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Solution

The fourth proportional to 631,889.05, 947,833.57 and 211,164.92 is: 316,747.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,889.05 : 947,833.57 = 211,164.92 : x
  2. Step 2: Convert to fraction form
    631,889.05/947,833.57 = 211,164.92/x
  3. Step 3: Cross multiply
    631,889.05x = 947,833.57 × 211,164.92
  4. Step 4: Simplify right side
    631,889.05x = 200,149,199,982.36
  5. Step 5: Solve for x
    x = 200,149,199,982.36/631,889.05
  6. Step 6: Final answer
    x = 316,747.38

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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.