Home / 420,470.02-580,244.09-229,481.86

Finding the Fourth Proportional to 420,470.02, 580,244.09 and 229,481.86

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Solution

The fourth proportional to 420,470.02, 580,244.09 and 229,481.86 is: 316,682.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,470.02 : 580,244.09 = 229,481.86 : x
  2. Step 2: Convert to fraction form
    420,470.02/580,244.09 = 229,481.86/x
  3. Step 3: Cross multiply
    420,470.02x = 580,244.09 × 229,481.86
  4. Step 4: Simplify right side
    420,470.02x = 133,155,493,027.21
  5. Step 5: Solve for x
    x = 133,155,493,027.21/420,470.02
  6. Step 6: Final answer
    x = 316,682.49

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1.5x scale

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.