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Finding the Fourth Proportional to 420,469.52, 580,243.40 and 229,481.36

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Solution

The fourth proportional to 420,469.52, 580,243.40 and 229,481.36 is: 316,681.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,469.52 : 580,243.40 = 229,481.36 : x
  2. Step 2: Convert to fraction form
    420,469.52/580,243.40 = 229,481.36/x
  3. Step 3: Cross multiply
    420,469.52x = 580,243.40 × 229,481.36
  4. Step 4: Simplify right side
    420,469.52x = 133,155,044,563.02
  5. Step 5: Solve for x
    x = 133,155,044,563.02/420,469.52
  6. Step 6: Final answer
    x = 316,681.80

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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.