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Finding the Fourth Proportional to 255,343.50, 352,376.46 and 142,168.68

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Solution

The fourth proportional to 255,343.50, 352,376.46 and 142,168.68 is: 196,194.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,343.50 : 352,376.46 = 142,168.68 : x
  2. Step 2: Convert to fraction form
    255,343.50/352,376.46 = 142,168.68/x
  3. Step 3: Cross multiply
    255,343.50x = 352,376.46 × 142,168.68
  4. Step 4: Simplify right side
    255,343.50x = 50,096,896,181.27
  5. Step 5: Solve for x
    x = 50,096,896,181.27/255,343.50
  6. Step 6: Final answer
    x = 196,194.13

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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.