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Finding the Fourth Proportional to 255,138.80, 351,936.70 and 159,566.90

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Solution

The fourth proportional to 255,138.80, 351,936.70 and 159,566.90 is: 220,105.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,138.80 : 351,936.70 = 159,566.90 : x
  2. Step 2: Convert to fraction form
    255,138.80/351,936.70 = 159,566.90/x
  3. Step 3: Cross multiply
    255,138.80x = 351,936.70 × 159,566.90
  4. Step 4: Simplify right side
    255,138.80x = 56,157,446,056.63
  5. Step 5: Solve for x
    x = 56,157,446,056.63/255,138.80
  6. Step 6: Final answer
    x = 220,105.48

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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.