Home / 420,905.80-580,862.46-229,922.32

Finding the Fourth Proportional to 420,905.80, 580,862.46 and 229,922.32

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Solution

The fourth proportional to 420,905.80, 580,862.46 and 229,922.32 is: 317,299.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,905.80 : 580,862.46 = 229,922.32 : x
  2. Step 2: Convert to fraction form
    420,905.80/580,862.46 = 229,922.32/x
  3. Step 3: Cross multiply
    420,905.80x = 580,862.46 × 229,922.32
  4. Step 4: Simplify right side
    420,905.80x = 133,553,244,404.11
  5. Step 5: Solve for x
    x = 133,553,244,404.11/420,905.80
  6. Step 6: Final answer
    x = 317,299.61

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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.