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Finding the Fourth Proportional to 305,831.91, 458,747.87 and 95,487.87

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Solution

The fourth proportional to 305,831.91, 458,747.87 and 95,487.87 is: 143,231.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,831.91 : 458,747.87 = 95,487.87 : x
  2. Step 2: Convert to fraction form
    305,831.91/458,747.87 = 95,487.87/x
  3. Step 3: Cross multiply
    305,831.91x = 458,747.87 × 95,487.87
  4. Step 4: Simplify right side
    305,831.91x = 43,804,856,973.34
  5. Step 5: Solve for x
    x = 43,804,856,973.34/305,831.91
  6. Step 6: Final answer
    x = 143,231.81

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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.