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Finding the Fourth Proportional to 230,939.40, 346,419.90 and 73,180.20

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Solution

The fourth proportional to 230,939.40, 346,419.90 and 73,180.20 is: 109,773.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,939.40 : 346,419.90 = 73,180.20 : x
  2. Step 2: Convert to fraction form
    230,939.40/346,419.90 = 73,180.20/x
  3. Step 3: Cross multiply
    230,939.40x = 346,419.90 × 73,180.20
  4. Step 4: Simplify right side
    230,939.40x = 25,351,077,565.98
  5. Step 5: Solve for x
    x = 25,351,077,565.98/230,939.40
  6. Step 6: Final answer
    x = 109,773.72

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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.