Home / 390,520.62-539,033.03-227,215.55

Finding the Fourth Proportional to 390,520.62, 539,033.03 and 227,215.55

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Solution

The fourth proportional to 390,520.62, 539,033.03 and 227,215.55 is: 313,624.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,520.62 : 539,033.03 = 227,215.55 : x
  2. Step 2: Convert to fraction form
    390,520.62/539,033.03 = 227,215.55/x
  3. Step 3: Cross multiply
    390,520.62x = 539,033.03 × 227,215.55
  4. Step 4: Simplify right side
    390,520.62x = 122,476,682,548.37
  5. Step 5: Solve for x
    x = 122,476,682,548.37/390,520.62
  6. Step 6: Final answer
    x = 313,624.11

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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.