Home / 300,623.16-415,138.86-225,040.44

Finding the Fourth Proportional to 300,623.16, 415,138.86 and 225,040.44

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Solution

The fourth proportional to 300,623.16, 415,138.86 and 225,040.44 is: 310,764.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,623.16 : 415,138.86 = 225,040.44 : x
  2. Step 2: Convert to fraction form
    300,623.16/415,138.86 = 225,040.44/x
  3. Step 3: Cross multiply
    300,623.16x = 415,138.86 × 225,040.44
  4. Step 4: Simplify right side
    300,623.16x = 93,423,031,715.50
  5. Step 5: Solve for x
    x = 93,423,031,715.50/300,623.16
  6. Step 6: Final answer
    x = 310,764.59

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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.