Home / 309,154.20-426,659.85-173,185.98

Finding the Fourth Proportional to 309,154.20, 426,659.85 and 173,185.98

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Solution

The fourth proportional to 309,154.20, 426,659.85 and 173,185.98 is: 239,011.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,154.20 : 426,659.85 = 173,185.98 : x
  2. Step 2: Convert to fraction form
    309,154.20/426,659.85 = 173,185.98/x
  3. Step 3: Cross multiply
    309,154.20x = 426,659.85 × 173,185.98
  4. Step 4: Simplify right side
    309,154.20x = 73,891,504,248.90
  5. Step 5: Solve for x
    x = 73,891,504,248.90/309,154.20
  6. Step 6: Final answer
    x = 239,011.81

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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.