Home / 457,025.60-685,732.80-220,246.40

Finding the Fourth Proportional to 457,025.60, 685,732.80 and 220,246.40

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Solution

The fourth proportional to 457,025.60, 685,732.80 and 220,246.40 is: 330,463.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,025.60 : 685,732.80 = 220,246.40 : x
  2. Step 2: Convert to fraction form
    457,025.60/685,732.80 = 220,246.40/x
  3. Step 3: Cross multiply
    457,025.60x = 685,732.80 × 220,246.40
  4. Step 4: Simplify right side
    457,025.60x = 151,030,180,561.92
  5. Step 5: Solve for x
    x = 151,030,180,561.92/457,025.60
  6. Step 6: Final answer
    x = 330,463.28

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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.