Home / 457,030.10-685,739.55-220,250.90

Finding the Fourth Proportional to 457,030.10, 685,739.55 and 220,250.90

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Solution

The fourth proportional to 457,030.10, 685,739.55 and 220,250.90 is: 330,470.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,030.10 : 685,739.55 = 220,250.90 : x
  2. Step 2: Convert to fraction form
    457,030.10/685,739.55 = 220,250.90/x
  3. Step 3: Cross multiply
    457,030.10x = 685,739.55 × 220,250.90
  4. Step 4: Simplify right side
    457,030.10x = 151,034,753,053.10
  5. Step 5: Solve for x
    x = 151,034,753,053.10/457,030.10
  6. Step 6: Final answer
    x = 330,470.03

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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.