Home / 420,960.76-580,927.90-229,977.34

Finding the Fourth Proportional to 420,960.76, 580,927.90 and 229,977.34

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Solution

The fourth proportional to 420,960.76, 580,927.90 and 229,977.34 is: 317,369.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,960.76 : 580,927.90 = 229,977.34 : x
  2. Step 2: Convert to fraction form
    420,960.76/580,927.90 = 229,977.34/x
  3. Step 3: Cross multiply
    420,960.76x = 580,927.90 × 229,977.34
  4. Step 4: Simplify right side
    420,960.76x = 133,600,253,173.79
  5. Step 5: Solve for x
    x = 133,600,253,173.79/420,960.76
  6. Step 6: Final answer
    x = 317,369.85

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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.