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Finding the Fourth Proportional to 207,953.70, 311,930.55 and 181,709.70

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Solution

The fourth proportional to 207,953.70, 311,930.55 and 181,709.70 is: 272,564.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,953.70 : 311,930.55 = 181,709.70 : x
  2. Step 2: Convert to fraction form
    207,953.70/311,930.55 = 181,709.70/x
  3. Step 3: Cross multiply
    207,953.70x = 311,930.55 × 181,709.70
  4. Step 4: Simplify right side
    207,953.70x = 56,680,806,661.34
  5. Step 5: Solve for x
    x = 56,680,806,661.34/207,953.70
  6. Step 6: Final answer
    x = 272,564.55

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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.