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Finding the Fourth Proportional to 214,871.88, 321,864.95 and 125,855.51

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Solution

The fourth proportional to 214,871.88, 321,864.95 and 125,855.51 is: 188,523.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,871.88 : 321,864.95 = 125,855.51 : x
  2. Step 2: Convert to fraction form
    214,871.88/321,864.95 = 125,855.51/x
  3. Step 3: Cross multiply
    214,871.88x = 321,864.95 × 125,855.51
  4. Step 4: Simplify right side
    214,871.88x = 40,508,475,194.77
  5. Step 5: Solve for x
    x = 40,508,475,194.77/214,871.88
  6. Step 6: Final answer
    x = 188,523.86

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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.