Home / 345,956.70-518,931.97-109,299.38

Finding the Fourth Proportional to 345,956.70, 518,931.97 and 109,299.38

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Solution

The fourth proportional to 345,956.70, 518,931.97 and 109,299.38 is: 163,948.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,956.70 : 518,931.97 = 109,299.38 : x
  2. Step 2: Convert to fraction form
    345,956.70/518,931.97 = 109,299.38/x
  3. Step 3: Cross multiply
    345,956.70x = 518,931.97 × 109,299.38
  4. Step 4: Simplify right side
    345,956.70x = 56,718,939,715.27
  5. Step 5: Solve for x
    x = 56,718,939,715.27/345,956.70
  6. Step 6: Final answer
    x = 163,948.09

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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.