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Finding the Fourth Proportional to 309,195.86, 426,735.39 and 173,239.04

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Solution

The fourth proportional to 309,195.86, 426,735.39 and 173,239.04 is: 239,095.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,195.86 : 426,735.39 = 173,239.04 : x
  2. Step 2: Convert to fraction form
    309,195.86/426,735.39 = 173,239.04/x
  3. Step 3: Cross multiply
    309,195.86x = 426,735.39 × 173,239.04
  4. Step 4: Simplify right side
    309,195.86x = 73,927,229,297.63
  5. Step 5: Solve for x
    x = 73,927,229,297.63/309,195.86
  6. Step 6: Final answer
    x = 239,095.15

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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.