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Finding the Fourth Proportional to 212,969.79, 293,898.60 and 122,343.30

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Solution

The fourth proportional to 212,969.79, 293,898.60 and 122,343.30 is: 168,833.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,969.79 : 293,898.60 = 122,343.30 : x
  2. Step 2: Convert to fraction form
    212,969.79/293,898.60 = 122,343.30/x
  3. Step 3: Cross multiply
    212,969.79x = 293,898.60 × 122,343.30
  4. Step 4: Simplify right side
    212,969.79x = 35,956,524,589.38
  5. Step 5: Solve for x
    x = 35,956,524,589.38/212,969.79
  6. Step 6: Final answer
    x = 168,833.92

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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.