Home / 312,318.27-430,998.72-169,078.28

Finding the Fourth Proportional to 312,318.27, 430,998.72 and 169,078.28

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Solution

The fourth proportional to 312,318.27, 430,998.72 and 169,078.28 is: 233,327.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,318.27 : 430,998.72 = 169,078.28 : x
  2. Step 2: Convert to fraction form
    312,318.27/430,998.72 = 169,078.28/x
  3. Step 3: Cross multiply
    312,318.27x = 430,998.72 × 169,078.28
  4. Step 4: Simplify right side
    312,318.27x = 72,872,520,104.81
  5. Step 5: Solve for x
    x = 72,872,520,104.81/312,318.27
  6. Step 6: Final answer
    x = 233,327.75

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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.