Home / 457,378.20-686,067.30-208,060.20

Finding the Fourth Proportional to 457,378.20, 686,067.30 and 208,060.20

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Solution

The fourth proportional to 457,378.20, 686,067.30 and 208,060.20 is: 312,090.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,378.20 : 686,067.30 = 208,060.20 : x
  2. Step 2: Convert to fraction form
    457,378.20/686,067.30 = 208,060.20/x
  3. Step 3: Cross multiply
    457,378.20x = 686,067.30 × 208,060.20
  4. Step 4: Simplify right side
    457,378.20x = 142,743,299,651.46
  5. Step 5: Solve for x
    x = 142,743,299,651.46/457,378.20
  6. Step 6: Final answer
    x = 312,090.30

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Similar ratio
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1.5x scale

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.