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Finding the Fourth Proportional to 631,818.70, 947,777.91 and 211,096.06

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Solution

The fourth proportional to 631,818.70, 947,777.91 and 211,096.06 is: 316,660.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,818.70 : 947,777.91 = 211,096.06 : x
  2. Step 2: Convert to fraction form
    631,818.70/947,777.91 = 211,096.06/x
  3. Step 3: Cross multiply
    631,818.70x = 947,777.91 × 211,096.06
  4. Step 4: Simplify right side
    631,818.70x = 200,072,182,556.04
  5. Step 5: Solve for x
    x = 200,072,182,556.04/631,818.70
  6. Step 6: Final answer
    x = 316,660.75

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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.