Home / 215,659.20-323,402.40-75,345.60

Finding the Fourth Proportional to 215,659.20, 323,402.40 and 75,345.60

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Solution

The fourth proportional to 215,659.20, 323,402.40 and 75,345.60 is: 112,988.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,659.20 : 323,402.40 = 75,345.60 : x
  2. Step 2: Convert to fraction form
    215,659.20/323,402.40 = 75,345.60/x
  3. Step 3: Cross multiply
    215,659.20x = 323,402.40 × 75,345.60
  4. Step 4: Simplify right side
    215,659.20x = 24,366,947,869.44
  5. Step 5: Solve for x
    x = 24,366,947,869.44/215,659.20
  6. Step 6: Final answer
    x = 112,988.21

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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.