Home / 215,703,903.60-323,555,855.40-86,331,481.20

Finding the Fourth Proportional to 215,703,903.60, 323,555,855.40 and 86,331,481.20

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Solution

The fourth proportional to 215,703,903.60, 323,555,855.40 and 86,331,481.20 is: 129,497,221.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,703,903.60 : 323,555,855.40 = 86,331,481.20 : x
  2. Step 2: Convert to fraction form
    215,703,903.60/323,555,855.40 = 86,331,481.20/x
  3. Step 3: Cross multiply
    215,703,903.60x = 323,555,855.40 × 86,331,481.20
  4. Step 4: Simplify right side
    215,703,903.60x = 27,933,056,247,615,016
  5. Step 5: Solve for x
    x = 27,933,056,247,615,016/215,703,903.60
  6. Step 6: Final answer
    x = 129,497,221.80

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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.