Home / 208,864.20-313,296.30-120,390.60

Finding the Fourth Proportional to 208,864.20, 313,296.30 and 120,390.60

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Solution

The fourth proportional to 208,864.20, 313,296.30 and 120,390.60 is: 180,585.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,864.20 : 313,296.30 = 120,390.60 : x
  2. Step 2: Convert to fraction form
    208,864.20/313,296.30 = 120,390.60/x
  3. Step 3: Cross multiply
    208,864.20x = 313,296.30 × 120,390.60
  4. Step 4: Simplify right side
    208,864.20x = 37,717,929,534.78
  5. Step 5: Solve for x
    x = 37,717,929,534.78/208,864.20
  6. Step 6: Final answer
    x = 180,585.90

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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.