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Finding the Fourth Proportional to 438,021.60, 656,878.80 and 227,589.60

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Solution

The fourth proportional to 438,021.60, 656,878.80 and 227,589.60 is: 341,304.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,021.60 : 656,878.80 = 227,589.60 : x
  2. Step 2: Convert to fraction form
    438,021.60/656,878.80 = 227,589.60/x
  3. Step 3: Cross multiply
    438,021.60x = 656,878.80 × 227,589.60
  4. Step 4: Simplify right side
    438,021.60x = 149,498,783,340.48
  5. Step 5: Solve for x
    x = 149,498,783,340.48/438,021.60
  6. Step 6: Final answer
    x = 341,304.59

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1.5x scale

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.