Home / 320,793.12-442,391.64-239,301.36

Finding the Fourth Proportional to 320,793.12, 442,391.64 and 239,301.36

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Solution

The fourth proportional to 320,793.12, 442,391.64 and 239,301.36 is: 330,009.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,793.12 : 442,391.64 = 239,301.36 : x
  2. Step 2: Convert to fraction form
    320,793.12/442,391.64 = 239,301.36/x
  3. Step 3: Cross multiply
    320,793.12x = 442,391.64 × 239,301.36
  4. Step 4: Simplify right side
    320,793.12x = 105,864,921,104.63
  5. Step 5: Solve for x
    x = 105,864,921,104.63/320,793.12
  6. Step 6: Final answer
    x = 330,009.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.