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Finding the Fourth Proportional to 228,685.30, 315,609.08 and 131,892.93

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Solution

The fourth proportional to 228,685.30, 315,609.08 and 131,892.93 is: 182,025.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,685.30 : 315,609.08 = 131,892.93 : x
  2. Step 2: Convert to fraction form
    228,685.30/315,609.08 = 131,892.93/x
  3. Step 3: Cross multiply
    228,685.30x = 315,609.08 × 131,892.93
  4. Step 4: Simplify right side
    228,685.30x = 41,626,605,636.34
  5. Step 5: Solve for x
    x = 41,626,605,636.34/228,685.30
  6. Step 6: Final answer
    x = 182,025.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.