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Finding the Fourth Proportional to 237,890, 328,288.20 and 131,906

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Solution

The fourth proportional to 237,890, 328,288.20 and 131,906 is: 182,030.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,890 : 328,288.20 = 131,906 : x
  2. Step 2: Convert to fraction form
    237,890/328,288.20 = 131,906/x
  3. Step 3: Cross multiply
    237,890x = 328,288.20 × 131,906
  4. Step 4: Simplify right side
    237,890x = 43,303,183,309.20
  5. Step 5: Solve for x
    x = 43,303,183,309.20/237,890
  6. Step 6: Final answer
    x = 182,030.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.