Home / 412,020.80-617,973.60-131,566.40

Finding the Fourth Proportional to 412,020.80, 617,973.60 and 131,566.40

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Solution

The fourth proportional to 412,020.80, 617,973.60 and 131,566.40 is: 197,331.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,020.80 : 617,973.60 = 131,566.40 : x
  2. Step 2: Convert to fraction form
    412,020.80/617,973.60 = 131,566.40/x
  3. Step 3: Cross multiply
    412,020.80x = 617,973.60 × 131,566.40
  4. Step 4: Simplify right side
    412,020.80x = 81,304,561,847.04
  5. Step 5: Solve for x
    x = 81,304,561,847.04/412,020.80
  6. Step 6: Final answer
    x = 197,331.21

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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.