Home / 457,035.60-685,747.80-220,256.40

Finding the Fourth Proportional to 457,035.60, 685,747.80 and 220,256.40

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Solution

The fourth proportional to 457,035.60, 685,747.80 and 220,256.40 is: 330,478.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,035.60 : 685,747.80 = 220,256.40 : x
  2. Step 2: Convert to fraction form
    457,035.60/685,747.80 = 220,256.40/x
  3. Step 3: Cross multiply
    457,035.60x = 685,747.80 × 220,256.40
  4. Step 4: Simplify right side
    457,035.60x = 151,040,341,735.92
  5. Step 5: Solve for x
    x = 151,040,341,735.92/457,035.60
  6. Step 6: Final answer
    x = 330,478.29

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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.