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Finding the Fourth Proportional to 321,758.88, 482,572.80 and 122,010.72

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Solution

The fourth proportional to 321,758.88, 482,572.80 and 122,010.72 is: 182,991.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,758.88 : 482,572.80 = 122,010.72 : x
  2. Step 2: Convert to fraction form
    321,758.88/482,572.80 = 122,010.72/x
  3. Step 3: Cross multiply
    321,758.88x = 482,572.80 × 122,010.72
  4. Step 4: Simplify right side
    321,758.88x = 58,879,054,780.42
  5. Step 5: Solve for x
    x = 58,879,054,780.42/321,758.88
  6. Step 6: Final answer
    x = 182,991.23

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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.