Home / 309,405.69-426,972.17-171,583.83

Finding the Fourth Proportional to 309,405.69, 426,972.17 and 171,583.83

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Solution

The fourth proportional to 309,405.69, 426,972.17 and 171,583.83 is: 236,781.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,405.69 : 426,972.17 = 171,583.83 : x
  2. Step 2: Convert to fraction form
    309,405.69/426,972.17 = 171,583.83/x
  3. Step 3: Cross multiply
    309,405.69x = 426,972.17 × 171,583.83
  4. Step 4: Simplify right side
    309,405.69x = 73,261,519,374.09
  5. Step 5: Solve for x
    x = 73,261,519,374.09/309,405.69
  6. Step 6: Final answer
    x = 236,781.42

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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.