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Finding the Fourth Proportional to 372,736.20, 559,104.30 and 313,687.20

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Solution

The fourth proportional to 372,736.20, 559,104.30 and 313,687.20 is: 470,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,736.20 : 559,104.30 = 313,687.20 : x
  2. Step 2: Convert to fraction form
    372,736.20/559,104.30 = 313,687.20/x
  3. Step 3: Cross multiply
    372,736.20x = 559,104.30 × 313,687.20
  4. Step 4: Simplify right side
    372,736.20x = 175,383,862,374.96
  5. Step 5: Solve for x
    x = 175,383,862,374.96/372,736.20
  6. Step 6: Final answer
    x = 470,530.80

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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.