Home / 421,286.98-581,388.70-230,310.58

Finding the Fourth Proportional to 421,286.98, 581,388.70 and 230,310.58

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Solution

The fourth proportional to 421,286.98, 581,388.70 and 230,310.58 is: 317,835.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,286.98 : 581,388.70 = 230,310.58 : x
  2. Step 2: Convert to fraction form
    421,286.98/581,388.70 = 230,310.58/x
  3. Step 3: Cross multiply
    421,286.98x = 581,388.70 × 230,310.58
  4. Step 4: Simplify right side
    421,286.98x = 133,899,968,702.45
  5. Step 5: Solve for x
    x = 133,899,968,702.45/421,286.98
  6. Step 6: Final answer
    x = 317,835.53

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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.