Home / 218,717.82-328,171.95-76,665.24

Finding the Fourth Proportional to 218,717.82, 328,171.95 and 76,665.24

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Solution

The fourth proportional to 218,717.82, 328,171.95 and 76,665.24 is: 115,031.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,717.82 : 328,171.95 = 76,665.24 : x
  2. Step 2: Convert to fraction form
    218,717.82/328,171.95 = 76,665.24/x
  3. Step 3: Cross multiply
    218,717.82x = 328,171.95 × 76,665.24
  4. Step 4: Simplify right side
    218,717.82x = 25,159,381,308.02
  5. Step 5: Solve for x
    x = 25,159,381,308.02/218,717.82
  6. Step 6: Final answer
    x = 115,031.24

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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.