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Finding the Fourth Proportional to 496,031.20, 744,219.60 and 215,749.60

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Solution

The fourth proportional to 496,031.20, 744,219.60 and 215,749.60 is: 323,699.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,031.20 : 744,219.60 = 215,749.60 : x
  2. Step 2: Convert to fraction form
    496,031.20/744,219.60 = 215,749.60/x
  3. Step 3: Cross multiply
    496,031.20x = 744,219.60 × 215,749.60
  4. Step 4: Simplify right side
    496,031.20x = 160,565,081,012.16
  5. Step 5: Solve for x
    x = 160,565,081,012.16/496,031.20
  6. Step 6: Final answer
    x = 323,699.56

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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.