Home / 322,511.40-483,985.80-209,917.35

Finding the Fourth Proportional to 322,511.40, 483,985.80 and 209,917.35

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Solution

The fourth proportional to 322,511.40, 483,985.80 and 209,917.35 is: 315,018.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,511.40 : 483,985.80 = 209,917.35 : x
  2. Step 2: Convert to fraction form
    322,511.40/483,985.80 = 209,917.35/x
  3. Step 3: Cross multiply
    322,511.40x = 483,985.80 × 209,917.35
  4. Step 4: Simplify right side
    322,511.40x = 101,597,016,573.63
  5. Step 5: Solve for x
    x = 101,597,016,573.63/322,511.40
  6. Step 6: Final answer
    x = 315,018.37

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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.