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Finding the Fourth Proportional to 415,113.30, 622,584.90 and 115,518.60

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Solution

The fourth proportional to 415,113.30, 622,584.90 and 115,518.60 is: 173,254.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,113.30 : 622,584.90 = 115,518.60 : x
  2. Step 2: Convert to fraction form
    415,113.30/622,584.90 = 115,518.60/x
  3. Step 3: Cross multiply
    415,113.30x = 622,584.90 × 115,518.60
  4. Step 4: Simplify right side
    415,113.30x = 71,920,136,029.14
  5. Step 5: Solve for x
    x = 71,920,136,029.14/415,113.30
  6. Step 6: Final answer
    x = 173,254.23

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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.