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Finding the Fourth Proportional to 428,999.31, 592,007.77 and 235,406.43

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Solution

The fourth proportional to 428,999.31, 592,007.77 and 235,406.43 is: 324,854.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,999.31 : 592,007.77 = 235,406.43 : x
  2. Step 2: Convert to fraction form
    428,999.31/592,007.77 = 235,406.43/x
  3. Step 3: Cross multiply
    428,999.31x = 592,007.77 × 235,406.43
  4. Step 4: Simplify right side
    428,999.31x = 139,362,435,667.96
  5. Step 5: Solve for x
    x = 139,362,435,667.96/428,999.31
  6. Step 6: Final answer
    x = 324,854.68

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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.