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Finding the Fourth Proportional to 323,831.42, 485,779.52 and 99,189.26

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Solution

The fourth proportional to 323,831.42, 485,779.52 and 99,189.26 is: 148,793.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,831.42 : 485,779.52 = 99,189.26 : x
  2. Step 2: Convert to fraction form
    323,831.42/485,779.52 = 99,189.26/x
  3. Step 3: Cross multiply
    323,831.42x = 485,779.52 × 99,189.26
  4. Step 4: Simplify right side
    323,831.42x = 48,184,111,111.96
  5. Step 5: Solve for x
    x = 48,184,111,111.96/323,831.42
  6. Step 6: Final answer
    x = 148,793.81

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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.