Home / 421,013.34-580,977.27-229,991.58

Finding the Fourth Proportional to 421,013.34, 580,977.27 and 229,991.58

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Solution

The fourth proportional to 421,013.34, 580,977.27 and 229,991.58 is: 317,376.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,013.34 : 580,977.27 = 229,991.58 : x
  2. Step 2: Convert to fraction form
    421,013.34/580,977.27 = 229,991.58/x
  3. Step 3: Cross multiply
    421,013.34x = 580,977.27 × 229,991.58
  4. Step 4: Simplify right side
    421,013.34x = 133,619,880,271.39
  5. Step 5: Solve for x
    x = 133,619,880,271.39/421,013.34
  6. Step 6: Final answer
    x = 317,376.83

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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.