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Finding the Fourth Proportional to 261,960.26, 361,505.16 and 142,728.26

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Solution

The fourth proportional to 261,960.26, 361,505.16 and 142,728.26 is: 196,965.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,960.26 : 361,505.16 = 142,728.26 : x
  2. Step 2: Convert to fraction form
    261,960.26/361,505.16 = 142,728.26/x
  3. Step 3: Cross multiply
    261,960.26x = 361,505.16 × 142,728.26
  4. Step 4: Simplify right side
    261,960.26x = 51,597,002,467.82
  5. Step 5: Solve for x
    x = 51,597,002,467.82/261,960.26
  6. Step 6: Final answer
    x = 196,965.00

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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.