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Finding the Fourth Proportional to 210,236.97, 315,386.66 and 68,034.58

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Solution

The fourth proportional to 210,236.97, 315,386.66 and 68,034.58 is: 102,061.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,236.97 : 315,386.66 = 68,034.58 : x
  2. Step 2: Convert to fraction form
    210,236.97/315,386.66 = 68,034.58/x
  3. Step 3: Cross multiply
    210,236.97x = 315,386.66 × 68,034.58
  4. Step 4: Simplify right side
    210,236.97x = 21,457,198,950.70
  5. Step 5: Solve for x
    x = 21,457,198,950.70/210,236.97
  6. Step 6: Final answer
    x = 102,061.97

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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.