Home / 215,031.06-322,625.49-74,829.78

Finding the Fourth Proportional to 215,031.06, 322,625.49 and 74,829.78

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Solution

The fourth proportional to 215,031.06, 322,625.49 and 74,829.78 is: 112,272.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,031.06 : 322,625.49 = 74,829.78 : x
  2. Step 2: Convert to fraction form
    215,031.06/322,625.49 = 74,829.78/x
  3. Step 3: Cross multiply
    215,031.06x = 322,625.49 × 74,829.78
  4. Step 4: Simplify right side
    215,031.06x = 24,141,994,439.09
  5. Step 5: Solve for x
    x = 24,141,994,439.09/215,031.06
  6. Step 6: Final answer
    x = 112,272.13

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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.