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Finding the Fourth Proportional to 210,993.68, 316,480.79 and 61,230.96

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Solution

The fourth proportional to 210,993.68, 316,480.79 and 61,230.96 is: 91,843.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,993.68 : 316,480.79 = 61,230.96 : x
  2. Step 2: Convert to fraction form
    210,993.68/316,480.79 = 61,230.96/x
  3. Step 3: Cross multiply
    210,993.68x = 316,480.79 × 61,230.96
  4. Step 4: Simplify right side
    210,993.68x = 19,378,422,746.34
  5. Step 5: Solve for x
    x = 19,378,422,746.34/210,993.68
  6. Step 6: Final answer
    x = 91,843.62

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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.