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Finding the Fourth Proportional to 310,295.29, 428,103.90 and 174,310.37

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Solution

The fourth proportional to 310,295.29, 428,103.90 and 174,310.37 is: 240,490.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,295.29 : 428,103.90 = 174,310.37 : x
  2. Step 2: Convert to fraction form
    310,295.29/428,103.90 = 174,310.37/x
  3. Step 3: Cross multiply
    310,295.29x = 428,103.90 × 174,310.37
  4. Step 4: Simplify right side
    310,295.29x = 74,622,949,207.44
  5. Step 5: Solve for x
    x = 74,622,949,207.44/310,295.29
  6. Step 6: Final answer
    x = 240,490.11

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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.