Home / 215,646,021.60-323,469,032.40-86,346,426.30

Finding the Fourth Proportional to 215,646,021.60, 323,469,032.40 and 86,346,426.30

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Solution

The fourth proportional to 215,646,021.60, 323,469,032.40 and 86,346,426.30 is: 129,519,639.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,646,021.60 : 323,469,032.40 = 86,346,426.30 : x
  2. Step 2: Convert to fraction form
    215,646,021.60/323,469,032.40 = 86,346,426.30/x
  3. Step 3: Cross multiply
    215,646,021.60x = 323,469,032.40 × 86,346,426.30
  4. Step 4: Simplify right side
    215,646,021.60x = 27,930,394,966,458,908
  5. Step 5: Solve for x
    x = 27,930,394,966,458,908/215,646,021.60
  6. Step 6: Final answer
    x = 129,519,639.45

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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.