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Finding the Fourth Proportional to 315,371.43, 435,437.84 and 194,676.57

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Solution

The fourth proportional to 315,371.43, 435,437.84 and 194,676.57 is: 268,792.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,371.43 : 435,437.84 = 194,676.57 : x
  2. Step 2: Convert to fraction form
    315,371.43/435,437.84 = 194,676.57/x
  3. Step 3: Cross multiply
    315,371.43x = 435,437.84 × 194,676.57
  4. Step 4: Simplify right side
    315,371.43x = 84,769,545,626.10
  5. Step 5: Solve for x
    x = 84,769,545,626.10/315,371.43
  6. Step 6: Final answer
    x = 268,792.72

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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.