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Finding the Fourth Proportional to 210,860.82, 316,218.33 and 68,669.37

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Solution

The fourth proportional to 210,860.82, 316,218.33 and 68,669.37 is: 102,980.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,860.82 : 316,218.33 = 68,669.37 : x
  2. Step 2: Convert to fraction form
    210,860.82/316,218.33 = 68,669.37/x
  3. Step 3: Cross multiply
    210,860.82x = 316,218.33 × 68,669.37
  4. Step 4: Simplify right side
    210,860.82x = 21,714,513,503.55
  5. Step 5: Solve for x
    x = 21,714,513,503.55/210,860.82
  6. Step 6: Final answer
    x = 102,980.31

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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.