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Finding the Fourth Proportional to 255,015, 351,920.70 and 141,835.32

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Solution

The fourth proportional to 255,015, 351,920.70 and 141,835.32 is: 195,732.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,015 : 351,920.70 = 141,835.32 : x
  2. Step 2: Convert to fraction form
    255,015/351,920.70 = 141,835.32/x
  3. Step 3: Cross multiply
    255,015x = 351,920.70 × 141,835.32
  4. Step 4: Simplify right side
    255,015x = 49,914,785,099.12
  5. Step 5: Solve for x
    x = 49,914,785,099.12/255,015
  6. Step 6: Final answer
    x = 195,732.74

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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.