Home / 284,786.40-427,147.20-74,445.60

Finding the Fourth Proportional to 284,786.40, 427,147.20 and 74,445.60

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Solution

The fourth proportional to 284,786.40, 427,147.20 and 74,445.60 is: 111,659.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,786.40 : 427,147.20 = 74,445.60 : x
  2. Step 2: Convert to fraction form
    284,786.40/427,147.20 = 74,445.60/x
  3. Step 3: Cross multiply
    284,786.40x = 427,147.20 × 74,445.60
  4. Step 4: Simplify right side
    284,786.40x = 31,799,229,592.32
  5. Step 5: Solve for x
    x = 31,799,229,592.32/284,786.40
  6. Step 6: Final answer
    x = 111,659.93

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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.