Home / 315,961.27-436,026.67-172,721.27

Finding the Fourth Proportional to 315,961.27, 436,026.67 and 172,721.27

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Solution

The fourth proportional to 315,961.27, 436,026.67 and 172,721.27 is: 238,355.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,961.27 : 436,026.67 = 172,721.27 : x
  2. Step 2: Convert to fraction form
    315,961.27/436,026.67 = 172,721.27/x
  3. Step 3: Cross multiply
    315,961.27x = 436,026.67 × 172,721.27
  4. Step 4: Simplify right side
    315,961.27x = 75,311,080,854.53
  5. Step 5: Solve for x
    x = 75,311,080,854.53/315,961.27
  6. Step 6: Final answer
    x = 238,355.42

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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.