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Finding the Fourth Proportional to 216,708.92, 298,996.06 and 124,811.18

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Solution

The fourth proportional to 216,708.92, 298,996.06 and 124,811.18 is: 172,203.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,708.92 : 298,996.06 = 124,811.18 : x
  2. Step 2: Convert to fraction form
    216,708.92/298,996.06 = 124,811.18/x
  3. Step 3: Cross multiply
    216,708.92x = 298,996.06 × 124,811.18
  4. Step 4: Simplify right side
    216,708.92x = 37,318,051,063.95
  5. Step 5: Solve for x
    x = 37,318,051,063.95/216,708.92
  6. Step 6: Final answer
    x = 172,203.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.