Home / 420,904.96-580,826.56-229,915.68

Finding the Fourth Proportional to 420,904.96, 580,826.56 and 229,915.68

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Solution

The fourth proportional to 420,904.96, 580,826.56 and 229,915.68 is: 317,271.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,904.96 : 580,826.56 = 229,915.68 : x
  2. Step 2: Convert to fraction form
    420,904.96/580,826.56 = 229,915.68/x
  3. Step 3: Cross multiply
    420,904.96x = 580,826.56 × 229,915.68
  4. Step 4: Simplify right side
    420,904.96x = 133,541,133,504.46
  5. Step 5: Solve for x
    x = 133,541,133,504.46/420,904.96
  6. Step 6: Final answer
    x = 317,271.47

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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.