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Finding the Fourth Proportional to 243,609.36, 365,410.01 and 72,831.47

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Solution

The fourth proportional to 243,609.36, 365,410.01 and 72,831.47 is: 109,245.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,609.36 : 365,410.01 = 72,831.47 : x
  2. Step 2: Convert to fraction form
    243,609.36/365,410.01 = 72,831.47/x
  3. Step 3: Cross multiply
    243,609.36x = 365,410.01 × 72,831.47
  4. Step 4: Simplify right side
    243,609.36x = 26,613,345,989.81
  5. Step 5: Solve for x
    x = 26,613,345,989.81/243,609.36
  6. Step 6: Final answer
    x = 109,245.99

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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.