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Finding the Fourth Proportional to 313,631.40, 432,813.41 and 170,391.41

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Solution

The fourth proportional to 313,631.40, 432,813.41 and 170,391.41 is: 235,141.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,631.40 : 432,813.41 = 170,391.41 : x
  2. Step 2: Convert to fraction form
    313,631.40/432,813.41 = 170,391.41/x
  3. Step 3: Cross multiply
    313,631.40x = 432,813.41 × 170,391.41
  4. Step 4: Simplify right side
    313,631.40x = 73,747,686,442.80
  5. Step 5: Solve for x
    x = 73,747,686,442.80/313,631.40
  6. Step 6: Final answer
    x = 235,141.27

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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.