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Finding the Fourth Proportional to 361,749.20, 542,818.20 and 151,408.40

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Solution

The fourth proportional to 361,749.20, 542,818.20 and 151,408.40 is: 227,193.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,749.20 : 542,818.20 = 151,408.40 : x
  2. Step 2: Convert to fraction form
    361,749.20/542,818.20 = 151,408.40/x
  3. Step 3: Cross multiply
    361,749.20x = 542,818.20 × 151,408.40
  4. Step 4: Simplify right side
    361,749.20x = 82,187,235,152.88
  5. Step 5: Solve for x
    x = 82,187,235,152.88/361,749.20
  6. Step 6: Final answer
    x = 227,193.97

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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.