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Finding the Fourth Proportional to 243,613.26, 365,415.87 and 72,835.38

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Solution

The fourth proportional to 243,613.26, 365,415.87 and 72,835.38 is: 109,251.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,613.26 : 365,415.87 = 72,835.38 : x
  2. Step 2: Convert to fraction form
    243,613.26/365,415.87 = 72,835.38/x
  3. Step 3: Cross multiply
    243,613.26x = 365,415.87 × 72,835.38
  4. Step 4: Simplify right side
    243,613.26x = 26,615,203,749.48
  5. Step 5: Solve for x
    x = 26,615,203,749.48/243,613.26
  6. Step 6: Final answer
    x = 109,251.87

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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.