Home / 428,268.50-591,650.42-281,440.61

Finding the Fourth Proportional to 428,268.50, 591,650.42 and 281,440.61

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Solution

The fourth proportional to 428,268.50, 591,650.42 and 281,440.61 is: 388,808.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,268.50 : 591,650.42 = 281,440.61 : x
  2. Step 2: Convert to fraction form
    428,268.50/591,650.42 = 281,440.61/x
  3. Step 3: Cross multiply
    428,268.50x = 591,650.42 × 281,440.61
  4. Step 4: Simplify right side
    428,268.50x = 166,514,450,746.10
  5. Step 5: Solve for x
    x = 166,514,450,746.10/428,268.50
  6. Step 6: Final answer
    x = 388,808.55

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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.