Home / 420,835.66-580,753.21-229,849.50

Finding the Fourth Proportional to 420,835.66, 580,753.21 and 229,849.50

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Solution

The fourth proportional to 420,835.66, 580,753.21 and 229,849.50 is: 317,192.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,835.66 : 580,753.21 = 229,849.50 : x
  2. Step 2: Convert to fraction form
    420,835.66/580,753.21 = 229,849.50/x
  3. Step 3: Cross multiply
    420,835.66x = 580,753.21 × 229,849.50
  4. Step 4: Simplify right side
    420,835.66x = 133,485,834,941.90
  5. Step 5: Solve for x
    x = 133,485,834,941.90/420,835.66
  6. Step 6: Final answer
    x = 317,192.31

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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.