Home / 280,960.20-421,072.56-245,331.72

Finding the Fourth Proportional to 280,960.20, 421,072.56 and 245,331.72

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Solution

The fourth proportional to 280,960.20, 421,072.56 and 245,331.72 is: 367,676.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,960.20 : 421,072.56 = 245,331.72 : x
  2. Step 2: Convert to fraction form
    280,960.20/421,072.56 = 245,331.72/x
  3. Step 3: Cross multiply
    280,960.20x = 421,072.56 × 245,331.72
  4. Step 4: Simplify right side
    280,960.20x = 103,302,455,389.60
  5. Step 5: Solve for x
    x = 103,302,455,389.60/280,960.20
  6. Step 6: Final answer
    x = 367,676.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.