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Finding the Fourth Proportional to 231,970.72, 320,108.88 and 131,369.44

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Solution

The fourth proportional to 231,970.72, 320,108.88 and 131,369.44 is: 181,283.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,970.72 : 320,108.88 = 131,369.44 : x
  2. Step 2: Convert to fraction form
    231,970.72/320,108.88 = 131,369.44/x
  3. Step 3: Cross multiply
    231,970.72x = 320,108.88 × 131,369.44
  4. Step 4: Simplify right side
    231,970.72x = 42,052,524,304.63
  5. Step 5: Solve for x
    x = 42,052,524,304.63/231,970.72
  6. Step 6: Final answer
    x = 181,283.76

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1.5x scale

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.