Home / 308,845.53-426,187.08-172,856.61

Finding the Fourth Proportional to 308,845.53, 426,187.08 and 172,856.61

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Solution

The fourth proportional to 308,845.53, 426,187.08 and 172,856.61 is: 238,531.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,845.53 : 426,187.08 = 172,856.61 : x
  2. Step 2: Convert to fraction form
    308,845.53/426,187.08 = 172,856.61/x
  3. Step 3: Cross multiply
    308,845.53x = 426,187.08 × 172,856.61
  4. Step 4: Simplify right side
    308,845.53x = 73,669,253,874.60
  5. Step 5: Solve for x
    x = 73,669,253,874.60/308,845.53
  6. Step 6: Final answer
    x = 238,531.07

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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.