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Finding the Fourth Proportional to 255,711.33, 352,868.81 and 142,512.21

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Solution

The fourth proportional to 255,711.33, 352,868.81 and 142,512.21 is: 196,659.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,711.33 : 352,868.81 = 142,512.21 : x
  2. Step 2: Convert to fraction form
    255,711.33/352,868.81 = 142,512.21/x
  3. Step 3: Cross multiply
    255,711.33x = 352,868.81 × 142,512.21
  4. Step 4: Simplify right side
    255,711.33x = 50,288,113,240.61
  5. Step 5: Solve for x
    x = 50,288,113,240.61/255,711.33
  6. Step 6: Final answer
    x = 196,659.70

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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.